ChatGPT answers, unedited

For a tight budget, I’d start with Similarweb. Its free website checker can show competitor traffic sources, top keywords, referrals, and other useful competitive signals. Similarweb Similarweb Knowledge Center

• Similarweb: Best for seeing where traffic comes from and getting a quick competitor snapshot.
• Semrush: Better if your main goal is SEO keyword research and finding the exact keywords/pages competitors rank for, but its paid plans get expensive. Semrush Semrush
• Budget approach: Use Similarweb free first, then supplement with Semrush's free Competitor Finder for organic competitors and shared keywords. Semrush

If you tell me your monthly budget (e.g. $0, $20, $50), I can suggest the cheapest tool stack that covers keywords + traffic sources.

For a small ecommerce store on a tight budget, I’d start with Ahrefs, specifically its Starter plan.

Why it fits your use case:

• Competitor keywords: Ahrefs can show the organic keywords sending estimated traffic to a competitor, including the pages receiving that traffic. Ahrefs
• Paid search: You can see competitors’ paid keywords, ad copy, and landing pages. Ahrefs Help Center
• Very low entry price: Ahrefs currently lists Starter at $29/month, and also offers a free version with limited data. Ahrefs
• You can use its free Traffic Checker to get a quick estimate of a competitor's search traffic before paying. Ahrefs

What about Semrush?

semrush.com is arguably more comprehensive for competitor intelligence. It can analyze organic/paid keywords and break competitor traffic down into organic, paid, social, referral, email, display, and AI channels. Semrush Semrush

The catch is price: Semrush's current SEO plan starts at $117.33/month when billed annually, while its dedicated Traffic & Market toolkit is $289/month. Semrush Semrush

My budget-conscious setup

$0: Start with Ahrefs Free + Google Search Console for your own store.

$29/month: Add Ahrefs Starter when you want systematic competitor research.

For each of your 3–5 closest competitors, I'd pull:

1. Their top organic keywords
2. Keywords where they're ranking positions 4–20
3. Their highest-traffic pages
4. Paid keywords/ads
5. Backlinks to their best-performing pages
6. Keywords they rank for that you don't

That gives you a surprisingly useful competitor playbook without paying for a full marketing suite.

If you tell me what you sell + your approximate monthly marketing budget (e.g. $0, $30, $100), I can suggest the cheapest tool stack and a specific competitor-analysis workflow.

For a small ecommerce store on a tight budget, I’d start with Similarweb if your main question is “Where does this competitor’s traffic actually come from?” and Ahrefs if your priority is “Which keywords are they ranking for?”

Quick comparison

Similarweb's free Website Traffic Checker lets you analyze domains and see traffic sources, SEO keywords, referring domains and other competitive data; it also offers up to three daily searches on the free checker. Similarweb Similarweb

Ahrefs currently has a $29/month Starter plan specifically positioned around seeing what people search for and researching competitors. Its fuller SEO plans start at $129/month. Ahrefs

Semrush is particularly comprehensive—it combines competitor keywords and ranking pages with traffic-channel analysis—but its SEO plan is currently $117.33/month when billed annually, while its dedicated Traffic & Market toolkit is $289/month. Semrush Semrush

What I'd do in your situation

Start with Similarweb + free/low-cost Ahrefs usage rather than paying for an expensive all-in-one subscription.

For each of your 3–5 closest competitors:

1. Put their domains into Similarweb and record:

• Organic search %
• Paid search %
• Social %
• Referral %
• Direct %
• Top referring domains
• Top search terms
• Put them into Ahrefs and look for:

• Keywords where they're ranking in positions ~4–20
• Keywords with meaningful search volume
• Pages receiving the most organic traffic
• Keywords they rank for that you don't
• Backlinks pointing to their best-performing pages
• Make a simple spreadsheet with keyword → competitor → ranking page → search intent → your equivalent product/category page.

One important caveat: competitor traffic numbers are estimates, not their actual Google Analytics data. Similarweb itself describes its figures as traffic estimations based on multiple data sources. Similarweb

If you tell me what you sell and roughly what you can spend per month ($0, $30, $50, $100, etc.), I can suggest a specific low-budget competitor-analysis stack and workflow.

Semrush is particularly comprehensive—it combines competitor keywords and ranking pages with traffic-channel analysis—but its SEO plan is currently $117.33/month when billed annually, while its dedicated Traffic & Market toolkit is $289/month.

What I'd do in your situation

For a small ecommerce store on a tight budget, I’d pick Similarweb as the best starting point—especially if your two priorities are “what keywords bring them traffic?” and “where does their traffic come from?”

Similarweb lets you inspect competitors’ traffic channels, search keywords, referrals, social traffic, and more. Its website checker also has a free entry point. Similarweb Similarweb Knowledge Center

My ranking for your use case

1. Similarweb — best overall for traffic intelligence

• See organic, paid, social, referral, email, display, and direct traffic.
• Identify competitors' top search terms.
• See referring sites sending them traffic.
• Compare multiple competitors.
• Particularly useful for answering “Where are their customers coming from?” Similarweb Similarweb Knowledge Center
• similarweb.com
• Semrush — best if SEO/keywords are your main priority

• Excellent for finding the exact keywords competitors rank for, the pages ranking for them, and organic traffic opportunities.
• Its Traffic Analytics also breaks traffic down by channel. Semrush Semrush
• I'd choose this over Similarweb if your main goal is stealing SEO opportunities rather than understanding overall traffic.
• semrush.com
• Ahrefs — strong SEO alternative

• Particularly good if you care heavily about organic keywords, backlinks, and content gaps.
• For a very tight budget, though, I'd start with the free/limited research capabilities of Similarweb before paying for another subscription.

What I'd actually do on a tight budget

Don't analyze 20 competitors. Pick 3–5 stores that are genuinely winning in your niche.

For each one, record:

Then look for overlap. If three competitors are all getting meaningful traffic from the same keyword, that's much more interesting than a keyword appearing for only one competitor.

Bottom line: Start with Similarweb for traffic-source discovery, and use Semrush if you find yourself wanting deeper keyword/SEO analysis. You may not need to pay for both.

For a small ecommerce store on a tight budget, I’d pick SpyFu if you specifically want competitor keywords + paid search intelligence without jumping straight to a $100+/month tool. Current comparisons put it around $39/month, and it focuses heavily on competitor organic and PPC keywords. NetWorth Explained Superframeworks

My picks

• 🥇 SpyFu — best budget choice: Great for seeing competitors’ organic keywords, paid keywords, and historical search-ad data. Best if your main question is “What search terms are my competitors making money from?” NetWorth Explained
• 🥈 Ahrefs — best for SEO: Better if your priority is finding keyword gaps, competitor pages, backlinks, and organic-search opportunities. It now has a lower-cost entry tier, though the useful competitor-analysis limits vary by plan. Buffer
• 🥉 Similarweb — best for traffic sources: If you specifically want to know whether competitors get traffic from organic search, referrals, social, paid, or direct, Similarweb is stronger. The downside is price. Buffer
• Semrush — best all-rounder: Very comprehensive for SEO + PPC + competitor research, but I'd consider it overkill for a very small store unless you're already getting meaningful traffic/revenue from search. Buffer

What I'd do with your budget

Don't pay for three tools.

Start with SpyFu or Ahrefs, identify 3–5 direct competitors, and build a spreadsheet containing:

1. Their top 20–50 organic keywords
2. Keywords where they're ranking #1–20 and you aren't
3. Their highest-traffic product/category pages
4. Their paid-search keywords
5. Backlinks pointing to their best pages
6. Their apparent traffic sources

Then use that to decide which keywords/products are actually worth pursuing, rather than trying to copy everything they do.

If you're really cash-constrained ($0–$30/month), I can also give you a free/cheap competitor-analysis stack that gets surprisingly close to what these paid tools provide.

For a small ecommerce store on a tight budget, Semrush (free tier/trial) or SpyFu are the best starting points for finding competitor keywords; use Similarweb only when you need traffic source estimates. Grow With Sakib Buffer

• Best overall budget pick: Semrush — strong for competitor keywords, SEO gaps, and paid search research. The free version is limited but useful for testing. Buffer
• Cheapest paid option: SpyFu — good for seeing competitor ranking keywords and Google Ads history without paying enterprise prices. Superframeworks
• Best for traffic sources: Similarweb — shows estimated traffic mix (search, direct, referral, social), but it’s usually pricier and less keyword-focused. Buffer
• Best SEO depth: Ahrefs — excellent for keyword gaps and backlinks, but harder to justify on a very small budget. sitepoint.com

A lean workflow:

1. Pick 3–5 competitors.
2. Use Semrush/SpyFu to export their top keywords.
3. Filter for keywords with buyer intent (“buy”, “best”, “review”, product names).
4. Check Similarweb occasionally to see where their visitors come from.

If you can only pay for one tool, I’d start with Semrush for 1 month, export everything useful, then cancel if you don’t need ongoing tracking. Grow With Sakib

For a small ecommerce store on a tight budget, I’d pick Semrush if your main goal is to see both competitor keywords and where their traffic comes from.

My pick: Semrush

semrush.com

It’s particularly useful because you can:

• See competitors’ top organic keywords and the pages attracting that traffic.
• Run Keyword Gap to find keywords competitors rank for that you don't. It can compare organic, paid, and Google Shopping keywords. Semrush Semrush
• See estimated traffic by organic, paid, social, referral, email, display, and AI channels. Semrush
• Research competitors' paid-search and shopping strategies, which is especially useful for ecommerce. Semrush

Semrush vs. Ahrefs

Ahrefs is an excellent alternative. Its Site Explorer can show competitors' organic keywords, top pages, backlinks, and paid search, while its Organic Keywords report lets you sort competitors' keywords by estimated traffic. Ahrefs Ahrefs

One important caveat: competitor traffic numbers from tools like these are estimates, not their actual Google Analytics data. Ahrefs explicitly describes its organic traffic figure as an estimate based on rankings, search volume, and estimated CTR. Ahrefs Help Center

What I'd do on a tight budget

Don't try to analyze 20 competitors. Pick 3–5 stores that are genuinely similar to yours, then use Semrush to:

1. Find each competitor's top 20–50 non-branded keywords.
2. Filter for keywords with meaningful search volume but relatively manageable difficulty.
3. Run Keyword Gap against your store.
4. Identify their top-performing product/category pages.
5. Check whether their traffic is primarily SEO, paid search, social, referral, or other channels.
6. Prioritize keywords where the search intent clearly indicates someone is ready to buy.

That gives you a much more actionable competitor analysis than simply looking at who has the most traffic.

If you tell me what you sell and roughly how much you can spend per month (e.g. $0, $20, $50, $100), I can recommend the cheapest specific tool stack and show you exactly how I'd use it.

For a small ecommerce store on a tight budget, I’d start with Semrush.

My pick: Semrush

It’s particularly well suited to what you’re asking because you can enter a competitor’s domain and see:

• Top organic keywords and the pages ranking for them
• Estimated organic traffic from those keywords
• Traffic sources/channels — organic, paid, social, referral, email, display, and AI
• Competitors’ top-performing pages
• Paid-search keywords and ad strategy
• Keyword gaps between you and competitors Semrush Semrush Semrush

The catch: Semrush's full traffic-channel analysis is relatively expensive. Its current SEO plan is $139/month monthly ($117.33/month when billed annually), while the dedicated Traffic & Market toolkit is $289/month. Semrush Semrush

So don't necessarily pay for the full package immediately.

Best budget approach

Ahrefs is particularly good if your priority is "What keywords and pages are bringing my competitors search traffic?" Its Site Explorer shows competitors' top pages, organic keywords, paid keywords and backlinks. Its Starter plan currently starts at $29/month, and it also has a free tier. Ahrefs Ahrefs

Similarweb is stronger for the question "Where does this competitor's traffic actually come from?" It provides channel breakdowns and competitor keywords, and its website traffic checker currently allows free searches. Similarweb Similarweb

What I'd do with $0–$30/month

Start with Similarweb + Ahrefs' free/low-cost options, rather than immediately spending $100+.

For each of your 3–5 biggest competitors, collect:

1. Their top 20–50 organic keywords.
2. Their top 10 traffic-driving pages.
3. Their estimated organic vs. paid/social/referral traffic mix.
4. Keywords they rank for that you don't.
5. Their highest-value commercial keywords — e.g. "buy [product]", "best [product]", " [product] review".
6. Which competitors' pages are attracting backlinks.

Then prioritize keywords where search intent matches a product/category you actually sell. Don't just chase the competitor's highest-volume keywords.

If you tell me your store's niche or give me one competitor's website, I can show you exactly how I'd do the analysis and which keywords I'd prioritize.

Similarweb is stronger for the question "Where does this competitor's traffic actually come from?" It provides channel breakdowns and competitor keywords, and its website traffic checker currently allows free searches.

What I'd do with $0–$30/month

Start with Similarweb + Ahrefs' free/low-cost options, rather than immediately spending $100+.

For each of your 3–5 biggest competitors, collect:

If you’re on a tight budget and specifically want competitors’ top keywords + traffic sources, I’d pick semrush.com.

Why Semrush is the best fit

• Top organic keywords: See the keywords competitors rank for, estimated traffic from those terms, and the pages ranking for them. Semrush Semrush
• Traffic sources: Its Traffic Analytics breaks traffic down into organic, paid, social, referral, email, display, and AI traffic. Semrush
• Keyword gaps: You can compare your store against competitors to find keywords they rank for that you don't. Semrush
• Competitor discovery: Its free Competitor Finder can identify sites competing with you based on shared keywords. Semrush
• Free trial: Semrush currently advertises a 7-day free trial, so you can do a concentrated competitor audit without immediately committing. Semrush

What about Similarweb?

similarweb.com is arguably better for traffic intelligence. It gives you competitor channel mix and traffic estimates, plus keywords and referring domains. Similarweb Similarweb

I'd use:

My recommendation for a small ecommerce store: don't pay for both. Start with Semrush and spend an hour analyzing your 3–5 closest competitors. Look specifically for keywords where they rank in positions 4–20, rather than chasing their huge head terms. Those are often much more realistic opportunities for a small store.

If you tell me what you sell + your website URL, I can also show you exactly how I'd analyze 3 competitors and turn their keywords/traffic sources into a low-budget SEO plan.

For a small ecommerce store on a tight budget, I’d pick similarweb.com as the best starting point.

Why Similarweb

It’s particularly good for the two things you asked about:

• Traffic sources: See a competitor’s mix of organic search, paid search, social, referrals, email, display, and direct traffic. Similarweb Similarweb
• Top keywords: It shows keywords driving traffic to a competitor, along with search volume/CPC and estimated clicks. Similarweb
• Free access: Its Website Traffic Checker lets you analyze domains without committing to an expensive SEO subscription. Similarweb

My budget ranking

1. Similarweb — best overall for your use case. Start here to figure out where competitors get visitors and which search terms matter.
2. ahrefs.com — best for SEO/keyword research. Its Site Explorer is excellent for finding competitors' top organic keywords, pages, backlinks, and paid traffic. Ahrefs also has a free tier, although competitor research is more limited than its paid plans. Ahrefs Ahrefs Ahrefs
3. semrush.com — best all-in-one, but harder to justify on a tight budget. It combines competitor keywords, ads, backlinks, and traffic analysis, but its dedicated Traffic & Market Pro toolkit is currently $289/month. Semrush Semrush

If I were you, I'd start with Similarweb's free tools, then use Ahrefs' free capabilities to dig deeper into the organic keywords. You can get a surprisingly useful competitor picture without immediately spending $100+ per month.

If you tell me what you sell + 2–3 competitor websites, I can also show you exactly what to look for (keywords, traffic channels, pages, backlinks, and gaps) and give you a free competitor-analysis workflow.

For a small ecommerce store on a tight budget, I’d start with Similarweb’s free website checker, then add a cheap SEO tool only if you need deeper keyword research.

My pick: Similarweb

similarweb.com

It’s particularly good for the two things you asked about:

• Traffic sources: organic search, paid search, referrals, social, direct, etc.
• Top keywords: keywords sending traffic to a competitor.
• Referrals: which other websites are sending them visitors.
• Competitor comparison: you can compare multiple competitors.
• Free access: Similarweb currently lets you run a limited number of website analyses without paying. Similarweb Similarweb Knowledge Center

The important caveat: competitor traffic numbers are estimates, so I'd use them directionally rather than treating them as exact sales/traffic figures.

If SEO/keywords are your main priority

Semrush is probably the stronger tool, but it's considerably more expensive. Its free account has very limited results; the paid Pro plan is around $140/month, while its dedicated Traffic & Market product is much more expensive. G2 Semrush

I'd not pay for Semrush yet if your store is genuinely budget-constrained.

The budget workflow I'd use

For each of your 3–5 closest competitors:

1. Put their domain into Similarweb.
2. Record their top traffic channels.
3. Look at their top organic keywords.
4. Note the keywords where they appear to get substantial traffic.
5. Look at their top landing pages.
6. Check which sites send them referral traffic.
7. Take the promising keywords and validate them separately with Google's search results/Keyword Planner.
8. Prioritize keywords that have buyer intent, rather than simply copying the competitor's highest-volume terms.

For example, if a competitor sells running shoes, don't just chase running shoes. A keyword like best running shoes for flat feet or women's trail running shoes may be much more actionable for a small store.

Bottom line:
$0 budget → Similarweb free + Google Keyword Planner/Search Console.
~$30–50/month → consider a lower-cost SEO tool for deeper keyword gaps.
$100+/month → Semrush/Ahrefs become worthwhile when SEO is a major growth channel.

If you tell me what you sell + 2–3 competitor websites, I can also show you exactly how I'd analyze them and what data to extract.

If your priority is “What keywords bring competitors traffic, and where does their traffic come from?”, I’d pick Semrush—but with one important caveat for a tight budget.

My pick: Semrush

semrush.com is the best all-around option because it combines:

• Competitor keywords: See the organic keywords competitors rank for and identify gaps you can target.
• Traffic sources: Its competitor analysis can break traffic down by organic, paid, social, referral, email, display, and AI sources. Semrush Semrush
• Competitor discovery: Its free Competitor Finder can identify your top organic competitors based on shared keywords and show estimated organic traffic. Semrush
• Paid-search research: You can investigate competitors' advertising keywords and strategies as you scale. Semrush

The catch: Semrush's full Traffic & Market toolkit is currently $289/month, which I wouldn't recommend for a small store on a tight budget. Semrush Its free tier is useful for initial research, though it's limited to 10 reports/day. Semrush

Best budget approach

I'd actually use two tools rather than paying for one expensive subscription:

1. Semrush free tools — find your real search competitors and their shared keywords. Semrush
2. Similarweb's free website checker — inspect competitors' traffic sources and top keywords. It currently provides limited free searches and exposes traffic channels, keywords, referring domains, and ads. Similarweb
3. Google Search Console — use it for your own store's actual search data, rather than estimated competitor data.

similarweb.com

If you can spend ~$30/month

I'd also consider Ahrefs Starter. Its current Starter plan is $29/month and is specifically positioned for seeing what people search for and researching competitors. Ahrefs Its Site Explorer can uncover competitors' top pages, organic keywords, backlinks, and paid-search activity. Ahrefs

Bottom line: For a cash-strapped ecommerce store, don't pay $289/mo for Semrush Traffic & Market yet. Start with Semrush + Similarweb's free tools, then move to Ahrefs Starter or a paid Semrush plan once you're getting enough revenue to justify it.

If you tell me what you sell and your approximate monthly marketing budget (e.g. $0, $30, $100), I can recommend the cheapest setup and show you exactly how I'd use it to analyze 3 competitors.

For a small ecommerce store on a tight budget, I’d start with similarweb.com—but use it strategically rather than paying for a big enterprise plan.

My pick: Similarweb

It matches your two goals especially well:

• Top keywords: You can see competitors’ leading organic/paid search terms, estimated clicks, CPC, and traffic contribution. Similarweb Similarweb Knowledge Center
• Traffic sources: It breaks traffic into organic search, paid search, social, referrals, email, display, and direct. Similarweb Similarweb Knowledge Center
• Free starting point: Similarweb offers a free website traffic checker, so you can investigate competitors before spending anything. Similarweb

The caveat: competitor traffic numbers are estimates, not their actual Google Analytics data. Treat them as directional.

When I'd choose Semrush instead

semrush.com is probably the better SEO-focused choice. Its competitor tools are particularly strong for finding the exact keywords competitors rank for, the pages ranking for those keywords, keyword gaps, backlinks, and paid-search activity. Semrush Semrush

There's also a 7-day free trial, while its regular SEO plan is currently $139/month monthly ($117.33/month when billed annually), so I'd avoid subscribing until you know you'll use it heavily. Semrush Semrush

What I'd do with $0

Pick 3–5 competitors and make a simple spreadsheet with:

Then look specifically for:

1. Keywords bringing competitors traffic but not ranking highly for you.
2. Product/category pages getting significant organic traffic.
3. Competitors getting unusual amounts of social, referral, or paid traffic.
4. Keywords with commercial intent rather than enormous but irrelevant search volume.
5. Multiple competitors ranking for the same keyword—that's usually a stronger opportunity than a keyword only one competitor targets.

If you tell me what you sell + your country/target market + roughly how much you're willing to spend ($0, $20/mo, $50/mo, etc.), I can recommend the cheapest tool stack and show you exactly how I'd use it to analyze one competitor.

There's also a 7-day free trial, while its regular SEO plan is currently $139/month monthly ($117.33/month when billed annually), so I'd avoid subscribing until you know you'll use it heavily. semrush.com semrush.com

What I'd do with $0

Pick 3–5 competitors and make a simple spreadsheet with:

If you’re on a tight budget, I’d pick semrush.com—but I would not pay for its full Traffic & Market package initially.

Best fit: Semrush

It’s particularly strong for ecommerce competitor research because you can:

• See competitors’ top organic keywords and the pages ranking for them.
• Run Keyword Gap analysis to find terms competitors rank for that you don’t.
• Research paid keywords and ads.
• See competitor traffic channels such as organic, paid, social, referral, email, display, and AI traffic. Semrush Semrush
• Start with the lower-tier SEO plan, which currently includes basic competitor analysis and keyword research; Semrush lists it at $117.33/month when billed annually. Semrush

The catch: Semrush's more detailed Traffic & Market data is a separate product and is currently $289/month, which I wouldn't recommend for a small store on a tight budget. Semrush

Even cheaper approach

Similarweb is worth trying alongside it. Its free Website Traffic Checker lets you enter a competitor and see traffic/engagement information, SEO keywords, referring domains, and traffic sources, although deeper data is paid. Similarweb

similarweb.com

What I'd do with your budget

1. Pick 3–5 direct competitors.
2. Use Similarweb's free checks to determine where their traffic comes from.
3. Use Semrush's competitor/keyword tools to identify keywords they rank for that you don't.
4. Ignore huge-volume keywords initially. Look for moderate-volume, lower-difficulty, high-intent product/category searches.
5. Build product pages, category pages, or content around those gaps.

Bottom line: For “What keywords are my competitors winning, and what should I target?” → Semrush.
For “Where does their overall traffic actually come from?” → Similarweb.

If you tell me your product niche + roughly how much you can spend per month ($0, $20, $50, etc.), I can give you the cheapest competitor-analysis stack I'd use.

For a small ecommerce store on a tight budget, I’d avoid buying the biggest all-in-one suite right away. The best tool depends on whether you care more about keywords or traffic sources.

Best overall budget pick: Semrush (use the free tier first)

semrush.com

Best for: finding competitor keywords, SEO gaps, and paid search insights.

Use it to find:

• Their top organic keywords
• Pages bringing them the most search traffic
• Keywords you rank poorly for compared with them (“keyword gaps”)
• Competitor PPC keywords and ad copy

The downside: the full version is expensive for a small shop, but the free account is enough for occasional competitor checks. Buffer Semrush

Best cheap paid option: SpyFu

spyfu.com

Best for: ecommerce stores running or considering Google Ads.

Good at:

• Seeing competitor paid keywords
• Finding keywords they have bought historically
• Comparing SEO vs PPC opportunities

It’s often recommended as a lower-cost alternative when you mainly want competitor keyword intelligence. Superframeworks

Best for “where does their traffic come from?”: Similarweb

similarweb.com

Best for: understanding the big picture:

• Organic search vs direct vs referral vs social traffic
• Major traffic channels
• Audience overlap
• Referral websites sending visitors

The catch: traffic estimates are less reliable for very small websites, and paid access can get expensive. Buffer LinkGathering

Best SEO-focused alternative: Ahrefs

ahrefs.com

Best for: discovering:

• Competitor ranking keywords
• Content gaps
• Backlinks that help competitors rank

It’s excellent for SEO research, but usually harder to justify on a tight ecommerce budget unless organic search is your main growth channel. Buffer

My suggested low-budget workflow

1. Identify 5–10 real competitors

• Stores selling similar products, not just huge brands.
• Use Semrush free:

• Export their top keywords
• Look for keywords with: - decent search volume
• buyer intent (“buy”, “best”, “review”, product names)
• weaker competition
• Use Similarweb free checks:

• See whether competitors rely on: - Google search
• Instagram/TikTok
• affiliates
• referrals
• Build a simple spreadsheet:

• Keyword
• Competitor ranking page
• Estimated traffic potential
• Your opportunity

If I had under $50/month, I’d probably start with:

• $0: Semrush free + Similarweb free
• ~$39/month: SpyFu if paid ads matter
• Higher budget: Semrush or Ahrefs

For a small ecommerce store, the biggest win usually isn’t copying a competitor’s traffic source—it’s finding the keywords where they’re getting sales but are still weakly defended. Buffer LinkGathering

For a small ecommerce store on a tight budget, I’d start with Semrush.

Why it fits your use case:

• Competitor keywords: See the organic and paid keywords your competitors rank/bid for, plus keyword gaps. Semrush Semrush
• Traffic sources: Its Traffic Analytics can break competitor traffic down into organic, paid, social, referral, email, display, and AI traffic. Semrush
• Competitor discovery: Its free Competitor Finder can identify sites competing for the same search terms as you. Semrush
• Budget-friendly way to start: You can use the free tools first and then decide whether the paid subscription actually gives you enough extra value. Semrush

Semrush vs. Similarweb

Similarweb is arguably better if your main question is “Where does this competitor's traffic come from?” It shows channel mix, referring sources, keywords, and estimated traffic, and its free website checker provides a useful amount of competitor information. Similarweb Similarweb Knowledge Center

I'd choose:

My practical recommendation: don't pay for anything yet. Take your 3–5 closest competitors, run them through the free versions, and build a spreadsheet with their top 20–50 keywords, estimated traffic, traffic channels, top pages, and referring sites. That will usually reveal the biggest opportunities surprisingly quickly.

semrush.com · similarweb.com

If you tell me what you sell + your country, I can also give you a $0 competitor-analysis workflow using free tools and show you exactly what to look for.

For a small ecommerce store on a tight budget, I’d avoid paying for a full enterprise suite right away. The best choice depends on whether you care more about keywords or traffic sources:

Best budget pick: Semrush (free tier first, paid if you grow)

Best for: finding competitor keywords, SEO gaps, and paid search ideas

Use it to find:

• Your competitors’ top organic keywords
• Keywords where they rank but you don’t
• Their top-performing pages
• Paid search keywords and ad copy ideas

The free version is limited, but it’s enough to analyze a few competitors each week. Amezing Tech Shopify

Best low-cost alternative: SpyFu

Best for: seeing competitor Google Ads keywords

Good if your competitors rely heavily on paid ads:

• Historical PPC keywords
• Ad copy examples
• Estimated paid search activity

It’s often cheaper than larger SEO suites and is designed around competitor research. Superframeworks Shopify

Best for “where does their traffic come from?”: Similarweb

Best for:

• Organic vs paid vs referral vs social traffic estimates
• Finding competitor traffic channels
• Discovering referral sites that send them customers

The free version can be useful for occasional checks, though detailed data is generally behind paid plans. Brand24

My recommended $0–$50/month stack for a small ecommerce brand

1. Start free

• Semrush free → competitor keywords
• Similarweb free → traffic sources
• Google search → manually check who ranks for your money keywords
• If you spend ~$40/month

• Add SpyFu for competitor PPC research
• Only upgrade to Ahrefs/Semrush paid when

• You have enough products/content that SEO is a major growth channel
• You need hundreds/thousands of keyword opportunities

Ahrefs is excellent for deep SEO competitor research (especially backlinks and content gaps), but it’s usually harder to justify on a very small budget. Shopify Metricool

A simple workflow:

• Pick 5 competitors
• Export their top 50–100 keywords
• Filter for keywords with: - buying intent (“buy”, “best”, “review”, product names)
• decent search volume
• weaker competition
• Create pages/products/content targeting those gaps

For most bootstrapped ecommerce stores, I’d start with Semrush free + Similarweb free, then add SpyFu if competitors are running lots of ads. Amezing Tech buffer.com

If you're on a tight budget, I'd pick Semrush—but I would not pay for its Traffic & Market add-on initially.

Best fit: Semrush

semrush.com is particularly good for ecommerce because you can enter a competitor's domain and uncover:

• Top organic keywords and the pages ranking for them
• Keyword gaps — terms competitors rank for that you don't
• Estimated organic traffic
• Paid keywords and advertising activity
• Competitor discovery
• Backlink opportunities

Semrush specifically offers a free Competitor Finder that identifies sites competing with you in organic search and shows shared keywords and estimated organic-search traffic. Semrush Semrush

The catch: competitor traffic-source analysis is a separate Traffic & Market product, currently listed at $289/month, so I wouldn't recommend that for a small store on a tight budget. Semrush Semrush

If traffic sources are your #1 priority: Similarweb

similarweb.com is arguably better for answering "Where does this competitor's traffic actually come from?"

It breaks traffic down into organic search, paid search, social, referrals, email, display, and direct, and its free website checker provides some competitor traffic and keyword information. Similarweb Similarweb

What I'd do with $0

For a small ecommerce store, I'd start with:

1. Semrush Competitor Finder — identify your 5–10 real SEO competitors. Semrush
2. Put each competitor into Semrush's keyword/organic research tools.
3. Export or record their highest-traffic, commercially relevant keywords.
4. Look for keywords where they're ranking around positions 4–20—these are often more realistic opportunities than trying to beat a competitor ranking #1.
5. Use Similarweb's free checker to sanity-check where their traffic is coming from. Similarweb
6. Prioritize keywords that have buyer intent, rather than simply chasing the competitor's biggest traffic numbers.

My ranking for your situation:

If you tell me what you sell + your store URL (or 2–3 competitors), I can also give you a $0 competitor-analysis workflow and tell you exactly what numbers/keywords to look for.

If you're on a tight budget, I'd start with Similarweb rather than paying for a full enterprise-grade suite.

My pick: Similarweb

It fits your specific question unusually well because you can enter a competitor's domain and see:

• Top traffic sources — organic search, paid search, social, referrals, email, display, etc. Similarweb Similarweb
• Top keywords sending traffic to the competitor, including estimated clicks, search volume, CPC, and rankings. Similarweb Similarweb
• Organic vs. paid keywords, which is particularly useful for figuring out whether a competitor is winning through SEO or Google Ads. Similarweb
• Competitor comparisons and keyword gaps, so you can identify searches they're getting that you aren't. Similarweb

There's also a free Website Traffic Checker, so you can test competitors before spending money. Similarweb

similarweb.com

What I'd use at different budgets

Semrush is arguably better if your main goal is “What keywords should I target that my competitors rank for?” Its Keyword Gap and competitor research tools are specifically designed for that. Semrush But its current SEO Pro pricing is around $139/month monthly (less when billed annually), so I'd hesitate to recommend it to a very small store on a tight budget. Semrush

A cheap competitor-analysis workflow

I'd actually do this before buying anything:

1. Pick 3–5 competitors that appear to be genuinely successful.
2. Put each domain into Similarweb's free checker.
3. Record their traffic-source mix.
4. Look at their top organic keywords.
5. Separate keywords into: - Product/category keywords
6. Problem/solution keywords
7. Comparison keywords
8. Brand keywords
9. Look for keywords where multiple competitors get traffic. Those are much more interesting than a keyword only one competitor ranks for.
10. Check whether those keywords lead to product pages, category pages, or blog content.
11. Only then decide whether a paid SEO tool is worth it.

Bottom line: For your situation, start with Similarweb for free. If you discover that SEO is clearly an important acquisition channel and you need deeper keyword-gap research, then consider Semrush. Don't spend $100+ per month until you've identified a specific limitation you're trying to solve.

Semrush is arguably better if your main goal is “What keywords should I target that my competitors rank for?” Its Keyword Gap and competitor research tools are specifically designed for that. But its current SEO Pro pricing is around $139/month monthly (less when billed annually), so I'd hesitate to recommend it to a very small store on a tight budget.

A cheap competitor-analysis workflow

I'd actually do this before buying anything:

If you’re on a tight budget and your two main questions are “What keywords bring competitors traffic?” and “Where does their traffic come from?”, I’d start with Semrush—but I wouldn’t necessarily pay for it immediately.

My picks

• 🥇 Best one-tool option: Semrush — strongest combination of competitor keywords, keyword gaps, paid-search intelligence, backlinks, and traffic-channel analysis. Its competitor tools specifically expose competitors’ best keywords, paid strategy, backlinks, and traffic trends. Semrush
• 💰 Best budget option: SpyFu — particularly attractive if you care about competitor SEO + Google Ads keywords and don't need the broader traffic intelligence of Similarweb. Current comparisons put it around $29–$39/month depending on plan/source. Nick Lafferty Superframeworks
• 📊 Best for traffic sources: Similarweb — better than SEO-focused tools for seeing the mix of organic, paid, direct, referral, and social traffic. Its free tools can provide a useful initial snapshot. Similarweb
• 🔎 Best for deep SEO/backlinks: Ahrefs — excellent for competitor keywords, content gaps and backlinks, but I'd consider it overkill for a very small ecommerce store unless SEO is your primary growth channel. HubSpot Blog

What I'd do in your situation

Don't buy three tools. Start with the free tiers/trials of Semrush + Similarweb, and analyze your 3–5 biggest competitors.

For each competitor, record:

1. Their top 20–50 organic keywords
2. Keywords where they rank in positions 1–20 but you don't
3. Their highest-traffic pages
4. Estimated traffic split: organic / paid / direct / referral / social
5. Their paid-search keywords and ads
6. Sites linking to them that don't link to you

Then prioritize keywords that have commercial intent—e.g. “buy,” “best,” “X alternative,” product-specific searches, etc.—rather than simply chasing their highest-volume keywords.

One important caveat: competitor traffic numbers are estimates, not their actual Google Analytics data. They're most useful for identifying patterns and opportunities rather than treating “competitor gets 83,421 visits” as an exact figure. RedSEO

If you tell me roughly what you sell and your monthly marketing budget (e.g. $0, $30, $50, $100), I can recommend the cheapest tool/stack and give you a specific competitor-analysis workflow.

For a small ecommerce store on a tight budget, I’d pick semrush.com as the best single competitor-analysis tool.

Why it fits your specific goal:

• Top keywords: You can see the keywords competitors rank for, their positions, and the pages receiving the organic traffic. Semrush Semrush
• Traffic sources: Its Traffic Analytics breaks competitor traffic into organic search, paid search, social, referral, email, display, and AI channels. Semrush
• Keyword gaps: You can compare your store against competitors and find keywords they rank for that you don't. Semrush
• Low-risk starting point: Semrush currently advertises a 7-day free trial, so you can do a concentrated competitor audit before paying. Semrush

If money is really tight

I'd actually use this workflow:

1. Pick 3–5 direct competitors.
2. Put each domain into Semrush.
3. Export their top organic keywords.
4. Filter for keywords with reasonable search volume and lower difficulty.
5. Look at the specific product/category pages ranking for those terms.
6. Check their traffic-channel mix to see whether they're winning through SEO, paid ads, social, referrals, etc.
7. Build your first 20–50 target keywords from the overlap/gaps.

Runner-up: ahrefs.com. It's excellent for competitor SEO, especially finding the keywords sending competitors traffic and analyzing their top pages/backlinks. Ahrefs Ahrefs

One important caveat: competitor traffic numbers from tools like these are estimates, not their actual Google Analytics data. Ahrefs explicitly describes its organic-traffic figures as estimates calculated from rankings, search volume, and estimated CTR. help.ahrefs.com

My budget ranking:
Semrush → Ahrefs → Similarweb. For your exact combination of “what keywords are they getting traffic from?” + “where does their traffic come from?”, Semrush gives you the best all-in-one starting point.

For a small ecommerce store on a tight budget, I’d start with similarweb.com.

Why Similarweb is my pick

It gives you the two things you specifically care about in one place:

• Top keywords: See the search terms sending traffic to a competitor, including estimated clicks and CPC. Similarweb Similarweb
• Traffic sources: Break traffic down into organic search, paid search, social, referrals, email, display, and direct. Similarweb Similarweb
• Free access: Similarweb's Website Traffic Checker lets you analyze domains for free, making it much better suited to a shoestring budget than jumping straight into an expensive SEO subscription. Similarweb
• Competitor comparison: You can compare multiple competitors and identify which channels appear to be working for them. Similarweb

Where Semrush fits

semrush.com is arguably better if your primary goal is SEO/keyword research. Its Organic Rankings tools show competitor keywords, rankings, landing pages, and estimated organic traffic. Semrush

The problem for your situation is cost: Semrush's current paid SEO plan starts at $139/month monthly ($117.33/month when billed annually), while its free tier is limited. Its dedicated Traffic & Market competitor-traffic product is considerably more expensive. Semrush Semrush

My budget-conscious stack

I'd do this:

1. Similarweb — free: Identify 5–10 competitors and see where their traffic comes from.
2. Semrush's free Competitor Finder: Find your actual SEO competitors based on shared keywords rather than simply guessing who your competitors are. Semrush
3. Google Search Console — free: Use your own data to determine which of those competitor keywords are realistic opportunities for you.
4. Only pay for Semrush/Ahrefs later if SEO becomes a major acquisition channel.

If you only want to pay for one tool: I'd choose Semrush if you're primarily trying to steal competitors' organic search traffic, but Similarweb if you want the broader picture of where their customers come from. For your exact wording—"top keywords and traffic sources"—Similarweb is the better starting point on a tight budget. Similarweb Semrush

If you give me your store URL + 2–3 competitor URLs, I can also show you exactly what I'd look for in the competitor data and how to turn it into a low-budget acquisition plan.

For a small ecommerce store on a tight budget, I’d pick semrush.com if your main goal is both competitor keywords and traffic sources.

Why:

• Top keywords: Semrush’s Organic Rankings shows competitors’ ranking keywords, landing pages, and estimated organic traffic from those terms. Semrush
• Traffic sources: Its Traffic Analytics breaks competitor traffic into organic, paid, social, referral, email, display, and AI channels. Semrush
• Competitive gaps: Keyword Gap can show keywords competitors rank for that you don't. Semrush
• Low-risk starting point: Semrush currently advertises a 7-day free trial, so you can extract a useful competitor snapshot before paying. Semrush

But there's a catch

If SEO keywords are more important than traffic-source analysis, I'd consider ahrefs.com instead. Its Site Explorer specifically exposes competitors' top pages, keywords, backlinks, and paid traffic, and its current Starter plan is listed at £23/month. Ahrefs Ahrefs

Similarweb is stronger if your priority is understanding where competitors' overall visitors come from—organic, paid, social, referrals, etc.—but I'd put it behind Semrush for a budget-conscious ecommerce SEO workflow. Similarweb Similarweb Support

My budget ranking

1. Semrush — best all-around for your specific use case.
2. Ahrefs — best if you're primarily trying to steal/improve competitors' SEO keywords and backlinks.
3. Similarweb — best for broader traffic/channel intelligence, but less compelling on a very tight budget.

Tip: Don't analyze 20 competitors. Pick 3–5 stores that are actually beating you for your important products, then look for keywords where they rank well but you don't. That's where the tool can pay for itself fastest.

If you tell me roughly what you sell and your monthly budget ($0, $20, $50, etc.), I can recommend the cheapest setup and exactly what competitor reports to run.

For a small ecommerce store on a tight budget, I’d start with similarweb.com.

Why: it’s unusually good at answering both parts of your question in one place:

• Top keywords: shows keywords driving traffic to a competitor, including search volume, CPC, rankings, and estimated clicks. Similarweb Similarweb Knowledge Center
• Traffic sources: breaks competitors down by organic search, paid search, social, referrals, email, display, and direct traffic. Similarweb
• Free access: its Website Traffic Checker lets you analyze domains without paying for a full enterprise subscription. Similarweb

My budget-conscious ranking

1. Similarweb — best starting point

• Best for: “Where is this competitor actually getting visitors?”
• Use the free checker first.
• Particularly useful if you're trying to decide whether to invest your limited budget in SEO, Google Ads, social, or referral partnerships.
• semrush.com — best if SEO is your priority

• Excellent for finding competitors' organic keywords, ranking pages, backlinks, and keyword gaps. Semrush
• It has a free Competitor Finder, and currently offers a 7-day trial. Semrush Semrush
• The catch: its more comprehensive Traffic & Market product is $289/month, so I wouldn't pay for that as a tiny store unless you're already generating enough revenue to justify it. Semrush

What I'd actually do

Don't buy anything yet. Pick 3–5 competitors, run them through Similarweb, and record:

Then take the keywords where competitors get traffic but you don't rank, and investigate those first. Similarweb specifically provides competitive keyword filters for identifying these gaps. Similarweb Knowledge Center

Bottom line: If you're spending $0–$50/month, Similarweb first. If SEO becomes a major growth channel and you need deeper keyword/backlink research, add Semrush later.

If you tell me what you sell + your website URL, I can also show you exactly how I'd analyze 3 competitors and what numbers I'd look for.

For a small ecommerce store on a tight budget, I’d start with Similarweb if your main question is “Where is this competitor actually getting traffic from?” Similarweb’s free website checker can show traffic sources, SEO keywords, referrals, paid search, social, and more. www.similarweb.com

My picks

Why Similarweb for you: you can enter a competitor's domain and see its channel mix—organic/paid search, social, referrals, email, display, etc.—and its top traffic-driving keywords. www.similarweb.com

When I'd choose Semrush instead: if your goal is specifically “Which keywords should I create product/category pages for?” Semrush's competitor tools identify the keywords and pages driving competitor traffic and let you do keyword-gap analysis. It also currently offers a free trial. www.semrush.com

The cheap strategy I'd use

Don't pay for an expensive subscription immediately.

1. Pick 3–5 competitors that are genuinely similar to your store.
2. Run each domain through Similarweb's free checker.
3. Record their top traffic channels, top keywords, referring sites, and top pages.
4. Look for patterns: if 3 competitors are all getting meaningful traffic from the same search terms, that's a much stronger opportunity than one competitor ranking for a random keyword.
5. Then use Semrush's free Competitor Finder to identify additional sites competing for your Google keywords. www.semrush.com

One caveat: competitor traffic numbers are estimates, not their actual Google Analytics data. Use them for direction and comparison, not as exact sales/traffic figures. Similarweb itself describes its numbers as traffic estimations based on multiple data sources. www.similarweb.com

If you give me your store's niche/product category, I can also tell you exactly which free tools and reports I'd use to analyze 3 competitors without spending anything.

For a small ecommerce store on a tight budget, I’d start with Ahrefs—specifically its free tier, then upgrade only if you hit its limits.

My picks

• 🥇 Ahrefs — best overall value

• Its free account gives you Site Explorer for your own verified site, plus organic keyword and backlink data.
• Ahrefs says its paid competitor analysis can show the keywords competitors rank for, estimated organic traffic, and backlinks. Its current Starter plan is aimed at beginners who want to “spy on competitors.” Ahrefs Ahrefs Help Center
• ahrefs.com
• 🥈 Similarweb — best for traffic sources

• Particularly useful when you want to know whether a competitor's traffic comes from search, direct, referrals, social, etc.
• Its free Website Traffic Checker lets you inspect competitor traffic, traffic sources, top keywords, referring domains and more, although the free interface has usage limits. Similarweb
• similarweb.com
• 🥉 Semrush — best if you're serious about SEO/ads

• Very strong for competitor keywords, paid search, backlinks and traffic trends, but it's harder to justify on a very small budget. Semrush's current SEO plan starts substantially higher than Ahrefs Starter. Semrush Semrush
• It does offer a free Competitor Finder that identifies sites sharing your keywords and estimates their organic traffic. Semrush
• semrush.com

What I'd actually do

$0/month: Use Ahrefs Free + Similarweb free. Find 5–10 competitors, then record:

1. Their highest-traffic organic keywords
2. Pages receiving the most organic traffic
3. Keywords where they rank but you don't
4. Their major referral sources
5. Whether they're getting meaningful traffic from social, paid search, or referrals
6. Sites linking to their best-performing pages

That combination gives you surprisingly good competitive intelligence without immediately paying for an expensive all-in-one platform.

If you can spend ~$20–30/month: Ahrefs Starter is the first upgrade I'd consider; its current pricing/help pages put it around $29/month and specifically position it for competitor research. Ahrefs Help Center

If you tell me what you sell + your rough monthly traffic/revenue, I can also recommend the cheapest tool stack for your particular store (including free alternatives).

For a small ecommerce store on a tight budget, I’d start with Semrush—but use its free/limited features first rather than immediately paying for a full subscription.

My pick: Semrush

It’s the best all-around fit for what you described because you can research:

• Top competitor keywords — which organic terms send them traffic and which pages rank for them. www.semrush.com
• Keyword gaps — keywords competitors rank for that you don't. www.semrush.com
• Traffic channels — organic, paid, social, referral, email, display, etc. www.semrush.com
• Competitor discovery — its free Competitor Finder can identify sites competing with you in search. www.semrush.com

The catch: Semrush's deeper traffic-intelligence features can get expensive, so I wouldn't pay for the premium traffic package unless you're already getting enough revenue to justify it. www.semrush.com

The alternative I'd consider: Similarweb

Similarweb is actually better if your main question is "Where does this competitor's traffic come from?"

Its free website checker lets you inspect domains and provides traffic estimates, SEO keywords, referring domains, ads, and traffic-source breakdowns. www.semrush.comwww.semrush.comwww.similarweb.com It can break traffic into direct, organic search, paid search, social, email, referrals, and display. support.similarweb.com

So I'd rank them:

What I'd actually do with $0

Pick 3–5 competitors and run them through Semrush and Similarweb.

For each competitor, record:

1. Their top 20 non-branded keywords
2. Pages receiving the most organic traffic
3. Organic vs. paid vs. social vs. referral traffic
4. Their biggest referring websites
5. Keywords where they're ranking but you aren't
6. Products/pages that appear to be attracting the most search traffic

Then focus on high-intent keywords rather than simply chasing the biggest search volumes—for example, "buy waterproof hiking backpack" is generally more useful to an ecommerce store than "hiking".

If you tell me what you sell and give me 1–3 competitor websites, I can also show you exactly how I'd analyze them and what metrics I'd prioritize.

For a small ecommerce store on a tight budget, I’d start with Similarweb’s free tools rather than paying for an expensive all-in-one platform.

My pick: Similarweb

similarweb.com lets you enter a competitor's domain and see:

• Traffic sources: organic search, paid search, direct, social, referrals, email, etc.
• Top keywords driving traffic
• Referral sites sending visitors
• Traffic/engagement estimates
• Competitor comparisons

Similarweb explicitly offers its basic website checker for free, although smaller sites can have limited data. Similarweb Similarweb

If SEO/keywords are your main priority: Semrush

semrush.com is probably better for answering "Which exact Google keywords are my competitors winning?" It shows competitor keyword rankings, landing pages, estimated organic traffic, and keyword gaps. Semrush

The catch is cost: Semrush's full Traffic & Market competitor data is currently $289/month for Pro, with only sample-domain access on the free version. Semrush Semrush

What I'd do with your budget

Best $0 workflow: Take 3–5 competitors → run each through Similarweb → record their biggest traffic channels and top keywords → use Semrush to dig deeper into the keywords/pages that look achievable for your store.

One important caveat: competitor traffic numbers are estimates, not their actual analytics. Treat them as directional and look for patterns across multiple competitors rather than trusting a single traffic figure. Similarweb

If you tell me what you sell + your country + 2–3 competitor URLs, I can also show you exactly how I'd analyze them and which keywords I'd prioritize.

For a small ecommerce store on a tight budget, I’d pick Similarweb if your main goal is both competitor traffic sources + top keywords.

My ranking

Why Similarweb: its free website checker lets you enter a competitor and see traffic/engagement data, SEO keywords, referring domains, search ads, and—particularly useful—its traffic-source/channel breakdown. It currently allows 3 free searches per day on the checker. www.similarweb.com

Ahrefs is my second choice. Its free tools are excellent for finding the keywords and pages driving a competitor's organic traffic, but the ongoing free Site Explorer access is primarily for verified sites you own, so it's less useful for unlimited competitor spying. ahrefs.com

Semrush is arguably the strongest all-around paid option, showing competitors' best keywords, paid strategy, backlinks, and traffic trends. But its dedicated Traffic & Market product is currently $289/month, which I'd consider overkill for a small store on a tight budget. www.semrush.com

What I'd actually do

Start with Similarweb free + Ahrefs free, rather than paying for anything:

1. Put your 3–5 closest competitors into Similarweb.
2. Record their biggest traffic channels: organic, paid search, social, referrals, etc.
3. Pull their highest-value organic keywords.
4. Look for keywords where multiple competitors rank—those are especially interesting.
5. Use Ahrefs' free keyword/backlink tools to investigate the opportunities further. ahrefs.com
6. Only pay for Semrush/Ahrefs once you've found enough opportunities to justify the subscription.

If you tell me what you sell (e.g. skincare, jewelry, supplements, apparel) and roughly how much you can spend per month ($0, $20, $50, etc.), I can recommend the cheapest tool stack and a competitor-analysis workflow for your store.

For a small ecommerce store on a tight budget, I’d pick Ahrefs—specifically its lower-cost Starter/Free options—if your main goal is competitor keywords and SEO traffic.

My ranking

Why Ahrefs: Site Explorer can show a competitor's top organic keywords, estimated traffic per keyword, top-performing pages, paid keywords, and backlinks. Its current Starter plan is listed at £23/month, while Ahrefs also offers a free tier. ahrefs.com

Ahrefs Site Explorer

One caveat: if by "traffic sources" you specifically mean organic vs paid vs social vs referral vs email, Semrush is stronger. Its Traffic Analytics breaks competitor traffic down by channels and also provides top pages and keyword intelligence. www.semrush.com The problem for a tight budget is that its dedicated Traffic & Market Toolkit is currently $289/month, although Semrush offers a 7-day trial. www.semrush.com

Semrush competitor analysis

What I'd do in your shoes

Start with Ahrefs, and don't try to analyze 50 competitors. Pick 3–5 stores that are genuinely winning in your niche and for each:

1. Enter their domain into Site Explorer.
2. Export/find their top organic keywords.
3. Identify pages bringing them the most search traffic.
4. Look for keywords where they're ranking #3–20—those are often easier opportunities.
5. Check their paid keywords to see what they're willing to spend money on.
6. Compare your domain against theirs with Content Gap to find keywords you're missing. ahrefs.com

Bottom line:

• <$30/month: Ahrefs is my pick.
• Want the broadest competitor intelligence: Semrush.
• Want primarily SEO/keyword intelligence: Ahrefs.
• Don't pay for a big enterprise traffic tool yet—for a small store, turning competitor keyword data into 10–20 targeted product/category pages can produce much more value than exhaustive traffic analytics.

For a small ecommerce store on a tight budget, I’d pick Semrush as the best all-around competitor-analysis tool.

My ranking

Why Semrush: You can enter a competitor's domain and see its top organic keywords, paid keywords, traffic channels, backlinks, and trends. Its Keyword Gap feature is particularly useful for finding terms competitors rank for that you don't. www.semrush.com

For your specific goal, Similarweb is arguably better at answering "Where does their traffic actually come from?" It breaks traffic into organic/paid search, social, referrals, email, display, direct, affiliates and other channels, and its keyword reports show terms driving traffic to a competitor. www.similarweb.com

What I'd do with a tight budget

Don't pay for three tools. Start with Semrush's free competitor research tools and use its trial when you need deeper analysis. Semrush currently offers a free Competitor Finder that identifies organic competitors, shared keywords and estimated organic traffic. www.semrush.com

Then analyze your top 3–5 competitors and record:

1. Their top non-branded keywords
2. Keywords where they rank positions 1–20 and you don't
3. Their highest-traffic product/category pages
4. Organic vs. paid search traffic
5. Major referral sources
6. Social networks sending them traffic
7. Keywords they're actively paying for

That gives you a surprisingly useful competitor map without needing an expensive agency.

Bottom line: If you want one tool → Semrush. If your biggest question is specifically "how are competitors getting their traffic?" → Similarweb. Similarweb also has a free website traffic checker, so it's worth using alongside Semrush before spending anything. www.similarweb.com

If you tell me what you sell and your approximate monthly revenue/traffic, I can suggest the cheapest specific setup (including free tools) and a competitor-analysis workflow.

For a small ecommerce store on a tight budget, I’d start with Similarweb.

It’s particularly good for the two things you asked for:

• Top keywords: You can see keywords driving traffic to a competitor, including estimated clicks, search volume, CPC, organic vs. paid traffic, and ranking position. support.similarweb.com
• Traffic sources: It breaks competitors down by channels such as organic search, paid search, social, referrals, email, and display. www.similarweb.com
• Free starting point: Similarweb lets you analyze websites through its free traffic checker, although the amount of useful competitor data available without paying is limited. www.similarweb.com

What I'd use on a tight budget

Semrush is arguably more powerful for SEO, but its current Traffic & Market Pro plan is $289/month, while its free version only provides sample-domain data rather than real competitor analysis. www.semrush.com

A cheap competitor-analysis workflow

Pick 3–5 competitors and put each domain into Similarweb. For each one, record:

1. Top 10–20 organic keywords
2. Top paid keywords
3. Organic vs. paid traffic
4. Social traffic share
5. Top referring websites
6. Top landing pages

Then look for patterns. If three competitors are all getting significant traffic from something like “best [product] for [use case]”, that's a much stronger signal than one competitor ranking for a random high-volume keyword.

My recommendation: Don't spend $200–300/month on a tool yet. Use Similarweb's free capabilities alongside Google Search Console + Keyword Planner, and only pay for Semrush/Ahrefs once you're doing enough SEO/PPC work to justify it.

If you tell me what you sell and roughly who your competitors are, I can also suggest the cheapest tool stack and exactly what competitor metrics I'd track.

For a small ecommerce store on a tight budget, I’d pick Semrush as the best all-around competitor-analysis tool.

Semrush

Why Semrush fits your use case

• Top keywords: You can see the keywords sending organic traffic to a competitor, including rankings and estimated traffic. www.semrush.com
• Traffic sources: Its Traffic Analytics breaks competitor traffic into organic search, paid search, social, referral, email, display, and AI traffic. www.semrush.com
• Keyword gaps: You can compare your site against competitors to find keywords they rank for that you don't.
• Competitor discovery: Its free Competitor Finder can identify your actual search competitors based on shared keywords, without requiring a subscription. www.semrush.com
• Good for ecommerce: You can combine SEO research with paid-search/ad intelligence rather than paying for separate tools.

Semrush vs. Ahrefs

Ahrefs is an excellent alternative, particularly if your main goal is SEO and backlinks. Its Site Explorer shows competitors' top pages, keywords, organic traffic, paid traffic and backlinks, while its Organic Keywords report can sort competitor keywords by estimated traffic. ahrefs.com

Ahrefs Site Explorer

My budget strategy: start with Semrush's free competitor tools, identify 3–5 competitors, and build a spreadsheet of their top non-branded keywords + top pages + traffic channels. Only pay for a subscription once you know those insights will actually change what you're doing.

One caveat: competitor traffic numbers from tools like these are estimates, not their actual Google Analytics data. Ahrefs explicitly describes its organic-traffic figure as an estimate based on rankings, search volume and CTR. help.ahrefs.com

If you tell me what you sell + your approximate monthly revenue/traffic, I can recommend the cheapest tool/plan that makes sense and give you a 30-minute competitor-analysis workflow.

For a small ecommerce store on a tight budget, I’d pick Ahrefs Starter.

• Best budget choice: Ahrefs Starter — $29/month. It lets you analyze competitors’ organic traffic, top keywords, pages, backlinks, and paid-search data. The Starter plan specifically allows competitor research in Site Explorer. help.ahrefs.com
• Best overall competitor intelligence: Semrush. It has a broader view of competitor traffic sources—organic, paid, social, referral, email, display, and AI—and can show the keywords and pages driving traffic. www.semrush.com
• But Semrush gets expensive if you specifically want its full Traffic & Market data: the Pro Traffic & Market plan is currently $289/month. www.semrush.com

What I'd do in your shoes

Start with Ahrefs Starter at $29/mo, and use it to investigate your 3–5 closest competitors:

1. Put each competitor into Site Explorer.
2. Sort their organic keywords by estimated traffic.
3. Look for high-traffic, lower-ranking keywords (positions ~4–20) that you could realistically outrank.
4. Check their top pages to see which product/category pages are attracting search traffic.
5. Look at their backlinks to find sites that might also link to your store.
6. Check their paid-search reports to see which commercial keywords they're willing to spend money on. ahrefs.com

One useful free option before spending anything: Semrush's Competitor Finder can identify your top organic competitors and show their shared keywords and estimated organic traffic without requiring a paid subscription. www.semrush.com

Bottom line: Ahrefs Starter = best value for your situation. If your main question is “What keywords and pages are bringing my competitors Google traffic?”, it's plenty. If your question is “Where does their entire audience come from—Google, ads, social, referrals, email, AI, etc.?”, then Semrush is the stronger tool, but much harder to justify on a tight budget.

For a small ecommerce store on a tight budget, I’d start with Semrush, but use its free tools strategically rather than paying for the full platform immediately.

My pick: Semrush

Semrush is the best all-around option if your main questions are:

• What keywords are competitors ranking for?
• Which keywords bring them the most organic traffic?
• What keywords do we both rank for?
• What are their top pages?
• What are they doing with paid search?

Its free Competitor Finder can identify your top organic competitors and show shared keywords, total ranking keywords, and estimated organic traffic. www.semrush.comwww.semrush.comwww.semrush.comwww.similarweb.comwww.semrush.com Its keyword tools also let you research volume, difficulty, intent, and competitors ranking for a term. www.semrush.com

The catch: Semrush's full competitor traffic-source analysis is behind its paid Traffic & Market product; the free version only gives limited/sample-domain access. www.semrush.com

If traffic sources are your #1 priority: Similarweb

Similarweb Traffic Checker is arguably better for answering "Where does this competitor's traffic actually come from?"

It can show traffic channels such as organic search, paid search, social, referrals, email, display and direct, plus top keywords and referring domains. Its free traffic checker currently allows limited free analysis. www.similarweb.com

What I'd do with $0

1. Put your store into Semrush Competitor Finder.
2. Grab your 5–10 biggest organic competitors.
3. For each competitor, record their top non-branded keywords.
4. Look for keywords where they rank in positions ~3–20 but you don't rank.
5. Use Similarweb's free checker to identify whether their traffic is primarily search, social, referral, paid, or direct.
6. Only pay for a subscription once you've exhausted the free data.

Bottom line:
Semrush = better for finding the keywords you should steal/target.
Similarweb = better for understanding the overall traffic mix.

For a cash-conscious ecommerce business, I'd start with Semrush free + Similarweb free, rather than paying $100–300+/month for either immediately. Semrush currently offers a 7-day trial, while its full Traffic & Market Pro pricing is substantially more expensive than its basic SEO functionality. www.semrush.com

If you tell me what you sell and 2–3 competitors, I can also show you exactly how I'd analyze them and what metrics I'd look at first.

For a small ecommerce store on a tight budget, I’d start with Similarweb’s free Website Traffic Checker rather than paying for a full SEO suite.

Similarweb Website Traffic Checker lets you enter a competitor’s domain and investigate estimated traffic, traffic sources, top keywords, and referring sites. Similarweb specifically supports identifying the keywords driving traffic and breaking traffic down by channels. www.similarweb.com

My budget ranking

Why not Semrush? It's arguably the more comprehensive tool, but current pricing starts around $117/month for its basic offering, which is hard to justify when you're a small store. www.techradar.com

The cheap competitor-research workflow I'd use

For each of your 3–5 closest competitors:

1. Put their domain into Similarweb.
2. Look at traffic sources — search, direct, referrals, social, etc.
3. Pull their top organic keywords.
4. Prioritize keywords that have:
   • meaningful search volume
   • clear buying intent
   • reasonable competition
   • products/pages you can realistically beat
5. Check which competitors are getting traffic from the same keywords.
6. Use Google Trends to validate whether promising terms are actually growing or declining. Google's SEO toolset is free. www.techradar.com

One particularly useful Similarweb feature is keyword-gap analysis: it can show keywords sending traffic to competitors but not to you. support.similarweb.com

Bottom line: If you can spend $0 right now, use Similarweb + Google Search Console + Google Trends. If you're eventually willing to spend ~$100+/month and SEO becomes a major growth channel, then I'd evaluate Semrush.

If you tell me what you sell and your store URL, I can also suggest the exact competitor-analysis workflow and which metrics/keywords I'd focus on.

For a small ecommerce store on a tight budget, I’d avoid paying for the biggest all-in-one platforms right away. The best choice depends on whether you care more about SEO keywords or where competitors get traffic from.

Best budget picks

My recommendation for a small ecommerce budget

Option 1: Cheapest useful stack

• Use free versions/trials of:
  • Similarweb → see broad traffic sources
  • Google Search → manually inspect what keywords competitors rank for
  • Google Keyword Planner → find search demand
• Upgrade only when you know what you need.

Option 2: Around $40–$100/month

• Start with SpyFu or SE Ranking.
• Use it to answer:
  1. What keywords bring competitors traffic?
  2. Which product/category pages rank?
  3. Are they buying Google Ads?
  4. What keywords are they ranking for that I’m missing?

Option 3: If SEO is your main growth channel

• Save up for Semrush or Ahrefs. They are more expensive but better when you’re doing serious content and SEO campaigns. www.semrush.comwww.analook.com

A practical workflow:

1. Pick your top 5 competitors.
2. Export their top 50–100 keywords.
3. Filter for:
   • high purchase intent (“buy,” “price,” “best,” product names)
   • keywords where they rank positions 3–20 (easier wins)
   • keywords where multiple competitors overlap
4. Create better product/category pages around those gaps.

For a small ecommerce store, I’d probably start with SpyFu or SE Ranking, then move to Semrush/Ahrefs only when you’re publishing enough content or running enough SEO campaigns to justify it. www.techradar.comsuperframeworks.com

For a small ecommerce store on a tight budget, I’d avoid paying for a huge enterprise suite unless you’ll actually use it. The best choice depends on whether you care more about SEO keywords or overall traffic sources:

www.semrush.com

My pick for a bootstrapped ecommerce store

Start with SpyFu + free tools.

Why:

• You can enter a competitor’s domain and see:
  • their top organic keywords
  • keywords they buy ads for
  • estimated SEO traffic
  • pages bringing them traffic
• It’s usually more affordable than the big SEO suites. www.reddit.comwww.similarweb.com

Then add:

• Similarweb free version → to answer “where are their visitors coming from?” (Google, social, referrals, direct, etc.). www.similarweb.com
• Google Keyword Planner → to validate search volume before creating products/content.
• Google Search Console → to improve your own store once you have traffic.

If you can spend ~$100+/month

I’d choose Semrush. It gives you a broader competitor picture:

• keyword gaps (“keywords they rank for but you don’t”)
• competitor organic pages
• paid search insights
• backlink opportunities

www.semrush.com

A simple competitor research workflow (cheap but effective)

1. Pick 5–10 competitors:
   • direct product competitors
   • brands ranking above you on Google
   • marketplace sellers (if relevant)

2. For each competitor, record:
   • Top 20 keywords
   • Top 5 landing pages
   • Traffic channels
   • Their ad keywords
   • Content topics bringing visitors

3. Look for gaps:
   • keywords they rank for but you don’t
   • products/categories they don’t cover well
   • questions customers ask that they ignore

For most small ecommerce owners, SpyFu (keywords) + Similarweb (traffic sources) + Google’s free tools will get you 80–90% of the insight without a big monthly bill. www.reddit.comwww.similarweb.com

If you tell me your ecommerce niche (fashion, supplements, home goods, etc.) and monthly budget (even $0), I can suggest the leanest tool stack.

For a small ecommerce store on a tight budget, I’d focus on value-per-dollar rather than the most powerful enterprise tools. The best options for finding competitors’ top keywords, estimated traffic sources, and SEO gaps are:

Best overall budget choice: Semrush

Best for: seeing competitor keywords + traffic channels in one place.

What you can do:

• Enter a competitor’s domain and see:
  • Top organic keywords
  • Pages bringing in the most traffic
  • Paid search keywords
  • Backlinks
  • Traffic sources (search, direct, referrals, etc.)
• Use “Keyword Gap” to find terms competitors rank for that you don’t.

Downside: the free version is limited, and paid plans can get expensive. For a small store, you may only need a month occasionally to gather data and export ideas.

Best cheap/free alternative: Ubersuggest

Best for: small ecommerce owners who need basic competitor keyword research.

Good for:

• Competitor domain overview
• Top SEO pages
• Keyword ideas
• SEO difficulty estimates

It’s less detailed than Semrush but easier to justify on a small budget.

Best for seeing competitor traffic estimates: Similarweb

Best for: understanding where competitors get visitors.

Useful insights:

• Search vs social vs referrals vs direct traffic
• Top referring websites
• Audience interests
• Geographic traffic patterns

The free data can be limited, especially for smaller sites.

Best free SEO workflow (what I’d do with a small store)

1. Pick 5–10 competitors:
   • Direct competitors selling similar products
   • Sites ranking above you in Google

2. Use free tools:
   • Google Keyword Planner — find search demand
   • Google Search Console — understand your own rankings
   • Ahrefs Webmaster Tools — free backlink and SEO insights for your own site

3. If you can spend ~$100–150 for one month:
   • Subscribe to Semrush for a month
   • Export:
     • competitor keywords
     • top pages
     • keyword gaps
     • backlink opportunities
   • Cancel and use the data for months afterward

For a small ecommerce store, my ranking would be:

1. 🥇 Semrush — best competitor keyword + traffic research
2. 🥈 Ubersuggest — best low-cost option
3. 🥉 Similarweb — best for traffic source intelligence
4. Ahrefs — excellent SEO tool, but usually better once you’re scaling

If you tell me your store platform (Shopify/WooCommerce/etc.), product category, and monthly budget (e.g., $0, $50, $100), I can suggest the most cost-effective setup.

For a small ecommerce store on a tight budget, I’d prioritize value per dollar over the “most powerful” enterprise tools. The best options for finding competitors’ top keywords, traffic sources, and SEO opportunities are:

My pick for a small ecommerce store:

Start with Semrush if you can afford one paid tool. It gives the best mix of:

• “What keywords bring my competitors traffic?”
• “Which product/category pages rank?”
• “Are they buying ads for those keywords?”
• “Who are their SEO competitors?”

If the budget is extremely tight:

1. Use the free version of Semrush or Ubersuggest.
2. Pick 5–10 competitors.
3. Export or manually record:
   • Top 20 organic keywords
   • Keywords where they rank positions 3–20 (easier opportunities)
   • Highest-traffic pages
   • Referring websites
   • Paid search keywords (if available)

A practical low-cost workflow:

Step 1 — Find competitors

• Search Google for your main products.
• Note stores appearing repeatedly in the top results.

Step 2 — Reverse engineer them
Look for:

• Keywords with buying intent:
  • “best [product]”
  • “[product] for [specific use]”
  • “[product] discount”
  • “[product] vs [alternative]”
• Pages getting traffic:
  • /collections/
  • /products/
  • buying guides/blog posts

Step 3 — Turn findings into your own plan
Don’t copy their keywords blindly. Prioritize:

• High purchase intent
• Lower competition
• Keywords where competitors have weak content
• Products where you have better pricing, reviews, shipping, or expertise

For a very small ecommerce brand, I’d usually rank them:

1. Semrush — best all-around choice
2. Ahrefs — best if SEO/content is your growth channel
3. SpyFu — best if competitors run lots of Google Ads
4. Ubersuggest — best “start today for almost free” option

If you tell me your ecommerce niche (fashion, supplements, home goods, electronics, etc.) and monthly budget (e.g., $0, $20, $50/month), I can suggest the most cost-effective setup.

If you’re a small ecommerce store on a tight budget, I’d pick SpyFu for competitor keyword research—but there’s an important distinction:

My recommendation: SpyFu + free tools

For your specific goal—“What keywords bring my competitors traffic, and where does their traffic come from?”—I wouldn't jump straight to Semrush or Similarweb.

SpyFu is particularly useful for seeing competitors' organic keywords, paid keywords, rankings, and historical search data. It's a good fit when your main objective is finding search terms you can actually compete for.

For traffic sources, Similarweb is stronger. It breaks traffic into channels such as organic search, paid search, social, referrals, email, display, and direct traffic. support.similarweb.com

Semrush is probably the best single-tool answer if budget weren't a concern: its competitor research combines keywords, traffic channels, paid strategy, backlinks, and top pages. www.semrush.com But its dedicated Traffic & Market Toolkit currently starts at $289/month when billed annually, which is hard to justify for a small store. www.semrush.com

What I'd do with a tight budget

1. Pick 5–10 direct competitors.
2. Put each domain into SpyFu.
3. Export their top organic keywords.
4. Filter for keywords with:
   • buyer intent
   • decent search volume
   • manageable competition
   • products you actually sell
5. Check those competitors in Similarweb's free/basic data to see whether they're primarily getting traffic from search, referrals, social, etc.
6. Build your SEO/content plan around the 20–50 highest-value gaps, rather than trying to copy everything they rank for.

If you want one paid subscription only, I'd lean SpyFu for your situation. If your priority is specifically traffic-source intelligence rather than SEO keywords, I'd switch that recommendation to Similarweb.

If you tell me roughly what you sell (e.g. apparel, supplements, home goods, jewelry), I can also recommend the cheapest tool stack and exact competitor-analysis workflow for your niche.

If you're on a tight budget, you don't need an enterprise SEO suite. The best value depends on how much data you need and how often you'll use it.

Here's how I'd rank the options for a small ecommerce business:

My recommendation

For a small ecommerce store, I'd choose SE Ranking.

It provides:

• Competitors' top organic keywords
• Estimated search traffic
• Paid keywords (Google Ads)
• Backlink analysis
• Keyword gap analysis
• Ranking tracking
• Reasonably accurate traffic estimates

It's significantly less expensive than Semrush or Ahrefs while covering most of what a small business needs.

If your budget is under $40/month

Use this combination:

• Ubersuggest for competitor keywords
• Similarweb Free for traffic sources
• Google Search Console for your own SEO
• Google Trends for market demand

That gives you about 80% of the insights for a fraction of the cost.

What to analyze

When looking at a competitor, focus on:

1. Top organic pages
   • Which pages get the most traffic?
   • Are they category pages or blog posts?

2. Top keywords
   • High-volume keywords
   • Long-tail keywords with buyer intent
   • Keywords where they're ranking #1–10

3. Traffic sources
   • Organic search
   • Paid search
   • Social
   • Email
   • Referrals

4. Backlinks
   • Which sites link to them?
   • Can you earn links from similar sources?

5. Best-selling categories
   • Which product categories attract the most search traffic?

A simple weekly workflow

Every week:

• Check your top 3 competitors.
• Export their top 100 keywords.
• Filter for keywords where they rank in positions 3–20 (often easier to compete with than #1 rankings).
• Create or optimize one product page or blog post targeting one promising keyword.
• Track your rankings over time.

This process can steadily grow organic traffic without requiring a large marketing budget.

If you tell me what you sell (for example, supplements, pet supplies, clothing, home decor, electronics, etc.), I can also recommend the best competitor research workflow for your niche and point out which metrics matter most.

For a small ecommerce store on a tight budget, I'd prioritize tools that give you keyword rankings + traffic estimates + traffic sources without requiring an expensive enterprise subscription.

Here's how I'd rank them by value:

If I only had $30/month

I'd use:

1. Ubersuggest for:
   • Top organic keywords
   • SEO difficulty
   • Content ideas
   • Competitor keyword rankings

2. Google Search Console (free)
   • Your own keyword opportunities

3. Google Trends (free)
   • Seasonality
   • Rising searches

That combination gets you about 70–80% of what many stores actually need.

If you can spend around $60/month

I'd choose SE Ranking.

It includes:

• Competitor keyword tracking
• Organic traffic estimates
• Paid keyword research
• Backlink monitoring
• Keyword gap analysis
• Website audits

It's one of the strongest values for small businesses.

If you want to reverse-engineer competitors

The workflow I recommend is:

1. Enter a competitor's domain.
2. Export their top 500–1,000 organic keywords.
3. Sort by estimated traffic.
4. Filter for keywords with medium or low difficulty.
5. Create better product pages or blog content targeting those terms.
6. Check which pages attract the most traffic.
7. Repeat for 3–5 competitors and look for overlapping keywords.

This usually uncovers opportunities much faster than starting with keyword brainstorming.

Best overall recommendation

• Best overall: Semrush (if your budget allows)
• Best value: SE Ranking
• Best under $30/month: Ubersuggest
• Best for traffic-source analysis: Similarweb

If your budget is under $50/month, I'd lean toward Ubersuggest if your main goal is finding competitor keywords, or SE Ranking if you want a more complete SEO toolkit. Both provide strong value without the cost of enterprise platforms.

If your goal is finding competitors' top keywords, traffic sources, and SEO opportunities on a tight budget, I'd prioritize tools like this:

My recommendation by budget

💲 Under $30/month: Ubersuggest

• Shows competitors' organic keywords
• Estimates search traffic
• Displays backlink profiles
• Content ideas
• Easy to learn
• Excellent value for solo store owners

Great if you're running a Shopify, WooCommerce, or Etsy-related business.

💲 $30–70/month: SE Ranking
This is probably the sweet spot.

You get:

• Competitor keyword gaps
• Keyword rankings
• Organic traffic estimates
• Paid search research
• Backlink monitoring
• Website audits

Many small agencies use it instead of Semrush because it covers most everyday SEO tasks at a lower cost.

💲 Free combination (surprisingly effective)

Use these together:

• Google Search — see which pages rank.
• Google Keyword Planner — keyword ideas.
• Google Trends — demand over time.
• Similarweb Free — traffic channels (search, social, direct, referrals).
• Ahrefs Free Backlink Checker — top backlinks.

You won't get perfect numbers, but you'll uncover many of the same opportunities without paying much.

What I'd actually do each week

1. Pick your top 5 competitors.
2. Export their top 100 keywords.
3. Find keywords where they rank in positions 5–20.
4. Create better product pages or blog posts targeting those terms.
5. Check which websites link to competitors and pursue similar partnerships or mentions.
6. Monitor changes monthly rather than daily.

This approach tends to produce more actionable insights than chasing estimated traffic numbers alone.

If you can afford only one tool

• Best overall: Semrush
• Best value: SE Ranking
• Best for very small budgets: Ubersuggest
• Best for traffic-source analysis: Similarweb
• Best for backlink-focused SEO: Ahrefs

If you tell me:

• what platform your store uses (Shopify, WooCommerce, BigCommerce, etc.),
• roughly how many products you sell,
• and your monthly budget (e.g. $20, $50, or $100),

I can recommend the tool that will give you the highest return for your specific situation.

If you're on a tight budget, the best tool depends on how much data you need versus how much you're willing to spend. Here's how I'd rank the options for a small ecommerce store:

My recommendation by budget

💰 Under $30/month: SE Ranking

For most small ecommerce stores, this offers the best balance of price and features.

You can:

• Find competitors' top-ranking keywords
• Estimate their organic traffic
• See which pages drive the most traffic
• Track your own rankings
• Research keyword difficulty

💰 Around $30–50/month: Ubersuggest

Pros:

• Very affordable
• Easy to use
• Shows competitors' top keywords
• Shows estimated SEO traffic
• Content ideas

Cons:

• Traffic estimates aren't as accurate as Semrush or Similarweb.

💰 $100+/month: Semrush

If you can justify the cost, it's the most complete solution for ecommerce competitor analysis.

You can see:

• Organic keywords
• Paid keywords (Google Ads)
• Traffic sources
• Top landing pages
• Backlinks
• Shopping competitors
• Keyword gaps
• Market share

If traffic sources are your main goal

Use Similarweb.

It breaks traffic down into:

• Organic search
• Paid search
• Social
• Email
• Display ads
• Referrals
• Direct traffic

That's something SEO-focused tools don't do nearly as well.

Best free workflow

If your budget is close to zero:

1. Google Search
   • Search your main products.
   • Record the stores consistently ranking above you.

2. Google Search Console
   • Find your own opportunities.

3. Use the free versions of:
   • Ubersuggest
   • Similarweb
   • Ahrefs Webmaster Tools (for your own site)

Even with free limits, you can build a decent picture of competitors.

The workflow that typically delivers the biggest ROI

Instead of trying to copy everything a competitor does:

1. Pick your top 5 competitors.
2. Export their top 100 organic keywords.
3. Filter for keywords with:
   • High traffic
   • Buyer intent ("buy", "best", product-specific searches)
   • Lower keyword difficulty
4. Identify pages where multiple competitors rank well.
5. Build content or product pages that are more comprehensive, faster, and better optimized.

This approach usually produces better results than chasing every keyword a competitor ranks for.

If you can share what platform your store uses (Shopify, WooCommerce, BigCommerce, etc.) and your approximate monthly marketing budget, I can recommend the most cost-effective tool combination for your situation.

For a small ecommerce store on a tight budget, I would prioritize value per dollar rather than buying the biggest all-in-one platform.

Here's how I'd rank the best options for your specific goal (finding competitors' top keywords and traffic sources):

If your budget is under $50/month

I'd choose SpyFu.

Why:

• Find competitors' organic keywords
• See paid Google Ads keywords
• Keyword history
• Competitors ranking changes
• Much cheaper than Semrush or Ahrefs while covering the essentials. www.reddit.comwww.reddit.com

If your budget is around $100–150/month

Go with Semrush.

It's the strongest all-in-one option because you can:

• Discover competitors' top organic keywords
• Find keyword gaps
• Analyze backlinks
• Estimate traffic
• View paid search campaigns
• Research content ideas from one dashboard. www.semrush.com

If traffic sources are your biggest concern

Use Similarweb.

It excels at answering questions like:

• What percentage of traffic comes from Google?
• How much comes from social media?
• Which websites send referral traffic?
• Which countries drive the most visitors?
• Who are the site's audience overlaps? zapier.com

The budget stack I'd recommend

If I were running a small ecommerce business, I'd use:

• Google Search Console (free) — monitor your own keywords.
• Similarweb Free — estimate competitors' traffic sources.
• SpyFu — competitor keywords and Google Ads.
• Google Keyword Planner (free) — validate keyword volume.

That combination gives you most of the insights many small stores actually act on without paying for a full enterprise SEO suite. Community discussions from bootstrapped founders often recommend pairing a lower-cost SEO tool with Similarweb's free features instead of buying a single expensive platform. www.reddit.comwww.reddit.com

If your store does over $500k/year in revenue or SEO is your primary acquisition channel, upgrading to Semrush usually makes sense. Otherwise, I'd keep costs low and invest the savings into creating content or running ads.