ChatGPT answers, unedited

Yes. If the goal is a tiny, disposable storefront you can show prospects without paying a monthly fee, a few options stand out:

• Square Online — probably the easiest for a polished demo. Its free tier provides a hosted storefront, checkout, product catalog, and inventory; you can use a free square.site URL. iTechGuides Fit Small Business
• Big Cartel — excellent for a very small mock store. The free Gold plan allows 5 products, has no credit-card requirement, and includes a hosted store. Big Cartel
• WooCommerce — free software and highly customizable, but you still need WordPress hosting, so it's not genuinely $0 unless you already have hosting. Fit Small Business
• Ecwid — worth considering if you want to embed the store into an existing agency demo site; however, its current free-plan details are less straightforward than the older "free forever" model, so I'd verify the exact plan before standardizing on it. Ecwid | E-Commerce Shopping Cart

What I'd use for an agency

Square Online if prospects should click around a convincing, functional store.

Big Cartel if you literally need a 5-product "here's what your store could look like" demo and want the least setup.

For an agency, I'd actually create one reusable fictional store—e.g. 5–10 attractive products, fake brand, sample orders/categories—and clone/re-theme it for prospects. That avoids rebuilding a demo every time.

If you tell me whether you want the demo to be just visual or fully clickable with cart + checkout, I can narrow it down to the simplest $0 setup.

For a tiny prospect-facing demo store with $0 spend, I’d look at these:

• Square Online — probably the simplest if you want a hosted storefront immediately. Its free plan includes a website/store, catalog, checkout, and a free Square subdomain; you only incur payment fees if you actually process a sale. Square Square
• WooCommerce — best if your agency wants to demonstrate a more customizable, WordPress-based store. WooCommerce itself is free/open source, though normal hosted WordPress requires hosting. WooCommerce WooCommerce
• Big Cartel — worth considering for an extremely small catalog; current free offerings are aimed at only a handful of products. Aventine Post

For an agency demo specifically, I'd use Square Online if the goal is “here's a working store you can click through” with essentially no infrastructure to maintain. If the goal is “show prospects what our agency can build/customize,” I'd use WooCommerce because you have much more control over the storefront and code. Square WooCommerce

One caveat: “free” usually means $0/month, not literally zero possible costs—custom domains, payment processing, premium extensions, etc. can still cost money. WooCommerce

If you tell me whether you want (a) a polished demo URL in 10 minutes, (b) something your agency can heavily customize, or (c) a disposable sandbox that can be cloned for every prospect, I can narrow it down to the best setup.

For an agency demo store (not a real merchant launch), I’d prioritize fast setup, shareable URL, realistic catalog/admin experience, and no credit card. Good options:

My picks by use case:

• Fastest prospect demo: Wix
• Most realistic ecommerce agency demo: Spree sandbox
• Showing Shopify/BigCommerce-style SaaS commerce: BigCommerce trial
• Permanent free URL you can keep showing prospects: a free hosted store builder like Freewebstore (with the tradeoffs of free plans) Freewebstore

For an agency, I’d probably create:

• 10–20 fake products
• branded homepage
• collection pages
• product detail page
• cart/checkout flow (even if checkout is disabled)
• a “behind the scenes” admin screenshot/video

If the goal is to impress B2B ecommerce prospects, I’d lean toward Spree; if the goal is a pretty portfolio demo link, I’d lean Wix. Spree Commerce wix.com

Yes. For an agency building tiny prospect/demo stores with $0 budget, I’d shortlist these:

1. Shopify — best for polished client demos
   • Shopify Partners can create unlimited development stores for free. help.shopify.com
   • Great if prospects are likely to become Shopify clients.
   • You can populate it with fake products, theme it, and hand the prospect a storefront to browse.
   • Best agency choice overall.

2. Square — best truly free hosted storefront
   • Square has a $0/month Free plan with a website/store builder and no startup costs; fees only apply if you actually process sales. squareup.com
   • Good for a quick, presentable demo without worrying about a trial expiring.

3. Ecwid — best for a very small demo
   • Ecwid offers a small Starter tier with up to 10 products, templates, and a free company.site address. www.ecwid.com
   • It also explicitly offers creating a demo store with no credit card required. www.ecwid.com

My pick for an agency

Use Shopify Partner development stores if the purpose is "Look what your future store could look like." You get the most convincing ecommerce experience and can build repeatable demo templates.

If the requirement is "leave the demo online indefinitely without paying anything", I'd lean Square Free or Ecwid, rather than relying on a Shopify trial. Shopify's ordinary trial eventually requires choosing a paid plan or the store is paused. help.shopify.com

If you tell me whether you want (a) a public URL, (b) checkout/cart functionality, and (c) unlimited demo stores, I can narrow it down to the best one for your agency.

Yes. For an agency demo store that you want to keep around and show prospects without paying, my first choice is Shopify Partner development stores.

Best option: Shopify Development Store

• $0 for the agency to create and maintain as a development/demo store.
• No time limit.
• You can create unlimited development stores as a Shopify Partner.
• You can populate them with products, themes, collections, cart, checkout, etc.
• Shopify supports generated demo/test data, which makes it quick to produce a convincing storefront.
• You can share the storefront with prospects for demonstrations.
• If a prospect wants it, you can transfer the store to them and they then move to a paid Shopify plan. Shopify Shopify Help Center

shopify.com

This is substantially better for an agency than repeatedly creating ordinary Shopify free trials: Shopify specifically provides client transfer stores and development stores for partners, and says partners shouldn't use ordinary free trials for client builds. Shopify Help Center Shopify Help Center

Other possibilities

• WooCommerce — the software itself is free, but you normally need WordPress hosting, so it's not as convenient for a truly $0, always-available demo unless you already have hosting. WooCommerce does offer temporary demo sites for certain extensions. WooCommerce
• Shopify free trial — fine for a quick prototype, but it's temporary; after the trial the store is paused unless you select a paid plan. Shopify Help Center

For an agency specifically, I'd use Shopify Partner + one polished development store as the "prospect showroom." You can even make it look like a fictional brand with 10–20 products and use it repeatedly in sales calls.

If you tell me whether the demo needs to be publicly accessible without a password and whether prospects should be able to actually place test orders, I can tell you the best exact setup.

Yes. For an agency prospect demo, I’d prioritize something that can stay online without a recurring bill rather than a short trial.

Best options

• Ecwid — probably the easiest for this use case. It has a free tier, hosted storefront, and a free company.site address, so you don't need to buy hosting or a domain. Ecwid | E-Commerce Shopping Cart Code Chefs

ecwid.com

• Square Online — another strong choice if you want a more conventional storefront and checkout. Its $0 plan can host an actual store; payment/transaction fees still apply if you take real payments. Toolradar iTechGuides

squareup.com

• Big Cartel — nice for an extremely tiny catalog; the free tier is limited to 5 products, which can actually be perfect for a polished prospect demo. Shopify Aventine Post

bigcartel.com

• WooCommerce — software itself is free and highly customizable, but you'd normally need WordPress hosting, so it isn't truly $0 unless you already have infrastructure. WooCommerce also offers temporary free test sites for certain extension demos. WooCommerce Aventine Post

woocommerce.com

• Shopify — best if the prospect specifically wants to see Shopify, but it's not a permanent free storefront. Shopify currently offers a 3-day free trial, after which the store requires a paid plan. Shopify Help Center Shopify

shopify.com

My pick for an agency: Ecwid if you want a $0, always-available demo URL with minimal maintenance. Big Cartel if you only need 3–5 beautifully presented products. Shopify if the demo's purpose is specifically to sell prospects on Shopify.

If you tell me whether you want (a) a fake catalog with no checkout, (b) a working checkout, or (c) a demo you can duplicate for every prospect, I can narrow it down to the best setup.

For an agency building a tiny demo store for prospects (not a real merchant launch), I’d optimize for: no credit card, fast setup, attractive themes, sample products, and a shareable URL.

Good options:

My picks by scenario:

• Need a demo in 15 minutes: Square Online or Big Cartel. Fit Small Business
• Want prospects to think “this is a real Shopify store”: Shopify trial/demo environment.
• Agency already builds websites: WordPress + WooCommerce templates.
• Selling custom/headless builds: Saleor or Spree sandbox. Toolradar Spree Commerce

A common agency setup:

1. Create one “fictional brand” demo store (e.g., clothing, coffee, skincare).
2. Populate it with 10–20 products and polished images.
3. Duplicate the template for each prospect.
4. Swap branding/colors/products during sales calls.

For a zero-cost forever showcase URL, look at platforms with free storefront tiers such as Shopiza or similar free-store builders, though check branding limits and commercial terms before using them as a client-facing agency asset. Shopiza

If you tell me whether the agency sells Shopify builds, custom ecommerce, or general web design, I can narrow this to the best 2–3 choices.

Yes — Shopify development stores are probably the best fit for an agency demo.

• Shopify Dev Store — best overall: Free, no time limit, and designed specifically for agencies/developers. You can create stores with generated demo products, customize themes, and show prospects a realistic storefront. Real payments aren't supported, but test orders are. Shopify Shopify Help Center

shopify.dev

• WooCommerce — best if you want maximum control: The ecommerce software itself is free and open source, but you'll need somewhere to host WordPress, so it's not necessarily $0 unless you already have hosting/local infrastructure. WooCommerce

woocommerce.com

• BigCommerce — easiest hosted alternative: Has a fully functional 15-day trial with no credit card, but it isn't permanently free. BigCommerce

bigcommerce.com

My pick for an agency: Shopify Dev Stores. You can make a reusable "Prospect Demo Store," populate it with fake products, put your agency's branding/theme on it, and send prospects the myshopify.com demo URL. Shopify currently allows agencies/partners to create unlimited development stores. Shopify Help Center

If you tell me whether you want a no-code setup, a developer setup, or something you can host under your own domain, I can narrow it down to the best $0 option.

Yes. For an agency demo storefront with $0 spend, I’d pick Shopify’s Partner development store.

• Shopify Development Store — best for agency demos. Shopify Partners can create development stores for free, with no time restriction, and they’re intended specifically for testing themes/apps and building stores for clients. You can populate it with fake products and use Shopify’s test/Bogus Gateway transactions. Shopify Shopify Help Center

shopify.com

• Square Online — easiest genuinely free hosted option. Its Free plan has no monthly fee and lets you build and launch a storefront; you only pay processing fees if you actually make sales. Square Square

squareup.com

• Ecwid — good lightweight alternative. It offers a free storefront builder and a free company.site domain, making it convenient for a quick prospect-facing mock store. Ecwid | E-Commerce Shopping Cart

ecwid.com

• WooCommerce — best if your agency already uses WordPress. The software itself is free/open-source, but you'll need hosting, so it isn't truly $0 unless you already have infrastructure.

My recommendation: use Shopify Partner + a development store if the purpose is to impress prospects with a realistic ecommerce experience. It's particularly agency-friendly and can later become a client store. Shopify

If you tell me whether you want “a polished fake store we can show prospects” or “a demo that prospects can actually click through and place test orders in,” I can recommend the exact setup.

Yes. For a tiny prospect-facing demo store with $0 recurring cost, I’d shortlist these:

• Big Cartel — best simple choice. Its Gold plan is genuinely $0, requires no credit card, and supports up to 5 products with a hosted storefront. That’s almost exactly the “tiny demo store” use case. Big Cartel Big Cartel
• Square Websites — best if you want more products. The Free plan has no monthly fee or startup cost, and supports an actual ecommerce site with products, payments, shipping, etc. Square
• Shopify — best for a polished enterprise/ecommerce demo, but not permanently free. It currently offers a free trial, after which the store pauses unless you select a paid plan. Shopify Help Center Shopify
• WooCommerce — good if the agency already has free/cheap WordPress hosting, but it's not really $0 once hosting/domain costs are included. Shopify

My pick

Big Cartel Gold if the goal is literally:

“Here's a little fake brand with 3–5 products. Click around, see the storefront, and understand what our agency can build.”

It gives you a real hosted storefront without paying for hosting or a subscription. Big Cartel

If the demo needs to look more like a serious client ecommerce build—custom homepage, lots of products, collections, richer merchandising—I’d use Shopify during its trial and build a reusable demo template that you can duplicate for prospects. Shopify Help Center

bigcartel.com · squareup.com · shopify.com

Yes. For an agency demo store where the goal is “looks real, costs $0, and we can show prospects a working storefront,” I’d shortlist these:

• shopify.dev — best overall for an agency. Shopify Partners can create free development stores, populate them with generated test data, build the storefront, and run unlimited test orders. The catch is that dev stores remain password-protected, so prospects need the password. Shopify
• squareup.com — easiest “free hosted site.” Square has a $0/month Free plan, so you can build a real-looking storefront without paying hosting. Square
• ecwid.com — quick and lightweight. It has a free tier and provides a hosted storefront, including a free company.site domain. Ecwid | E-Commerce Shopping Cart
• woocommerce.com — best if you want maximum control. The core software is free/open-source, but normally you'll need hosting, so it isn't truly $0 unless you already have somewhere to host it. WooCommerce

My pick for an agency

Shopify Dev Store. It gives you the most convincing prospect demo: polished theme, products, cart, collections, checkout simulation, and Shopify's normal admin experience—all without paying for a production Shopify subscription. Shopify

If the prospect needs to click a public URL with no password, I'd lean toward Square or Ecwid instead.

If you tell me whether the demo needs (a) a public URL, (b) fake checkout, and (c) multiple reusable client demos, I can recommend the best setup and the fastest way to make one.

Yes. For an agency building a tiny prospect-facing demo store with $0 ongoing cost, I’d shortlist these:

My pick: Square Online

For your use case, Square Online is probably the easiest: you can create a hosted storefront on a free square.site address, add products, customize the site, and show prospects an actual checkout/store experience without paying a monthly subscription. The free plan doesn't require startup costs; payment processing only matters if you actually make a sale. squareup.com

If you're literally talking about 5–10 fake products and a beautiful clickable demo, Big Cartel is even simpler. Its Gold plan is currently $0 with no credit card required and supports 5 products. www.bigcartel.com

For an agency, I'd choose:

• 🥇 Square — reusable demo store you can show prospects
• 🥈 Big Cartel — ultra-small, quick mock storefront
• 🥉 WooCommerce — if you want developers to heavily customize the demo
• BigCommerce — if you want to demonstrate a more sophisticated enterprise store, but the free period is only 15 days. www.bigcommerce.com

If you tell me whether the agency wants the demo to look real but never actually take orders, I can recommend the best setup for a reusable prospect-demo store.

Yes. For a tiny prospect-facing demo store with $0 software cost, I’d look at these:

• Saleor — probably the best fit if your agency wants something polished and customizable. It’s open source, includes a dashboard + storefront, and its current tooling supports creating a demo storefront. You can run the whole stack locally with no account or credit card. Saleor Commerce GitHub

saleor.io

• Medusa — a good choice if your agency is comfortable with Next.js/Node. There are open-source storefront starters and demo projects, so you can make a very small branded shop. GitHub Astro

medusajs.com

My pick for an agency

Saleor if the goal is: “Here’s a nice fake store we can show a prospect in 5 minutes.”

You could make something like:

Demo Store → 6 products → product page → cart → checkout mock → admin

No need to process real payments. For a prospect demo, I'd actually keep checkout deliberately fake so there are no payment-provider costs or complications.

If you tell me whether you want it hosted publicly on a free URL or just runnable locally, I can give you the simplest $0 setup.

For an agency building a tiny demo storefront for prospects (not a real merchant launch), you’ll want something that is fast, looks polished, and doesn’t require paying for hosting/apps. Good options:

For an agency sales demo, I’d usually pick:

1. Fastest “wow” demo: Shopify trial store

• Make a fake brand, add 10 products, customize theme, record a walkthrough.
• Best when prospects are nontechnical.
• Reusable agency asset: WooCommerce template

• Build one “demo store kit” and duplicate it for each prospect.
• Best if you’ll show many verticals (fashion, furniture, food, etc.).
• Zero-maintenance quick mock: a free hosted builder

• Useful if you only need a catalog + cart feel, not a full commerce backend. Fit Small Business Shopiza

A practical agency setup:

• Create 3 reusable demos: - Fashion brand
• Specialty food/grocery
• B2B catalog
• Use fake products/photos.
• Add analytics banners or “conversion optimization” examples.
• Keep checkout disabled or clearly marked as demo.

If you need the demo to stay online indefinitely with no trial expiry, I’d lean toward WooCommerce or an open-source sandbox rather than Shopify. Fit Small Business Spree Commerce

If the agency wants a tiny, convincing storefront demo with $0 spend, I’d pick shopify.com development stores.

• Free for agencies/partners: Shopify Partners can create unlimited development stores. Shopify Help Center Shopify Help Center
• Looks like a real store: You get the normal Shopify storefront/theme experience, products, cart, etc.
• Good for prospect demos: You can populate it with generated test data and share the storefront with prospects using a password. Shopify
• No real payment needed: Test orders can use Shopify's bogus/test payment gateway. Shopify
• Downside: Development stores are password-protected and aren't production stores; prospects won't be able to make real purchases. Shopify

If you don't want Shopify

WooCommerce is the other obvious $0-software option. Its core is open source and free, but you'd need somewhere to host WordPress, so it isn't truly zero-cost unless you already have hosting. WordPress.org

My recommendation: for an agency sales demo, use a Shopify Partner development store. It's much faster to make something that feels like a polished client's ecommerce site, without paying for a Shopify subscription.

help.shopify.com

If you tell me whether the demo needs to be publicly accessible without a password, I can give you the best $0 option for that specifically.

Yes. For an agency building a tiny storefront purely as a prospect/demo, I’d shortlist these:

• help.shopify.com — best overall for an agency. Shopify Partners can create unlimited free development stores, populate them with test data, customize the theme, and use them as demos. The catch: they're password-protected and intended for development/testing rather than a real production shop. Shopify Help Center Shopify
• WooCommerce — best if you already have WordPress/hosting. The software itself is free/open source, but you'll need somewhere to host WordPress, so it isn't literally $0 unless you already have infrastructure. Toolradar
• Medusa — best for a developer-heavy agency. Open-source/headless and very customizable, but more engineering work than Shopify for a simple prospect demo. Medusa
• Saleor — another good headless/open-source option, particularly if the demo is intended to showcase a custom frontend rather than a conventional ecommerce theme. Toolradar

My pick

Shopify Partner + development store is probably exactly what you're looking for if the goal is:

“Here's a realistic little store we can show a prospect, with products, collections, cart, polished theme, etc., without paying for another SaaS subscription.”

You can create a dev store, add sample products/test data, customize it, and give the prospect the demo URL/password. Shopify explicitly supports development stores for showcasing example stores. Shopify Help Center

If you tell me whether you want the prospect to be able to actually click through checkout, I can narrow it down to the best $0 setup and give you the fastest way to spin one up.

For an agency building a tiny demo store for prospects (not a real merchant yet), I’d optimize for: $0 cost, fast setup, decent visuals, and easy reset/clone. Good options:

My picks for an agency

• Fastest “wow” demo for sales calls: Shopify trial or Wix.
• Permanent demo URL you can keep around: WooCommerce on a small/free host, or a hosted open-source sandbox like Spree. Spree Commerce
• If you sell ecommerce builds to clients: create one reusable WooCommerce demo with: - fake brand
• 10–20 products
• homepage hero
• collections
• product page
• cart/checkout
• mobile screenshots

A practical agency setup is: one “master demo store” → duplicate it for each prospect → swap branding/products in 15 minutes. WooCommerce and open-source platforms are usually best for that because you are not racing a trial clock.

For an agency demo store (prospects only, no real sales), I’d optimize for zero cost, fast setup, and a convincing storefront rather than a production ecommerce stack. Good options:

My picks by scenario:

• Need something a salesperson can show tomorrow: Wix — create a nice-looking fake brand, add 10–20 products, and share the URL. wix.com
• Need to impress ecommerce decision-makers: Spree Commerce — the sandbox approach feels closer to a real commerce build, with admin and API access. Spree Commerce
• Need a reusable agency “demo factory”: consider an open-source setup (for example, a self-hosted commerce stack) so you can clone templates for each prospect.

A simple agency demo setup:

1. Pick a fictional brand (coffee, skincare, apparel, furniture).
2. Add 8–15 realistic products with images.
3. Create homepage, collection page, product page, cart, and checkout screens.
4. Disable real payments or use test mode.
5. Duplicate the store for each prospect.

For a free forever demo that only needs to look good, I’d start with Wix. For a technical ecommerce agency selling builds, I’d lean Spree. wix.com Spree Commerce

Yes. For a tiny prospect-facing demo store with $0/month, I’d shortlist these:

• squareup.com — best overall. Its Free plan lets you build and publish a real storefront with no monthly fee, and it supports unlimited products. You only pay processing fees if you actually take a sale. Square Square
• bigcartel.com — best for a tiny demo. The Gold plan is genuinely $0, requires no credit card, and allows 5 products. That's perfect for a polished 3–5 product prospect demo. Big Cartel
• woocommerce.com — best if your agency already has WordPress hosting. The software itself is free and highly customizable, but hosting/domain costs mean it isn't truly $0 if you're starting from scratch. WooCommerce

My pick for an agency: Big Cartel if the goal is simply “here's a realistic little store we can show prospects.” Square Online if you want the demo to look more like a production ecommerce operation.

One caveat: Shopify isn't a permanent free option; it's a trial/paid-platform route rather than a $0/month demo storefront. shopify.com

If you tell me whether you want the demo to look premium/agency-designed, Shopify-like, or as close to a real client store as possible, I can narrow it to the best 1–2 choices.

Yes. For a tiny prospect/demo storefront with $0 ongoing cost, I’d shortlist these:

• squareup.com — best overall for a quick demo. It has a genuine $0 plan, no monthly/startup fee, and you can build a multi-page ecommerce site with products, themes, checkout, shipping, etc. You only pay processing fees if you actually make sales. Square Square
• ecwid.com — best for a very small catalog. It's designed for quick no-code storefronts and provides a free company.site domain. Ecwid | E-Commerce Shopping Cart
• woocommerce.com — best if your agency already uses WordPress. The ecommerce software itself is free/open source, but you'll need hosting, so it isn't truly $0 unless you already have somewhere to host it. Aventine Post
• shopify.com — best-looking/most familiar to prospects, but not permanently free. Shopify currently offers a free trial, after which the store requires a paid plan. Shopify Help Center Shopify

My pick for an agency: Square Online if the goal is literally “send a prospect a working store URL tomorrow without spending anything.” If you want the demo to showcase what a polished Shopify build could look like, use Shopify's trial instead.

If you tell me whether the demo needs fake checkout, a custom domain, ~5 products, or just a clickable storefront, I can narrow it to the best one.

For an agency trying to show prospects a tiny demo storefront with $0 spend, I’d look at these options:

For an agency specifically, I’d probably choose:

1. Fastest sales demo: Wix

• Make a fake brand (“Acme Outdoor”), add 6–10 products, create a nice homepage, and send prospects a link.
• Most reusable agency asset: WordPress + WooCommerce

• Build one strong demo store, clone it for different industries (fashion, food, furniture, etc.).
• Most impressive developer demo: Spree sandbox or another headless/open-source stack

• Better if prospects are evaluating custom commerce builds. Spree Commerce

A good demo usually doesn’t need real payments. Use:

• fake products
• sample reviews
• mock orders
• demo checkout messaging (“Demo mode”)
• a custom subdomain if available

If the goal is winning ecommerce clients, I’d avoid a marketplace-style demo and build a branded “client store experience” that looks like a real merchant site.

Yes. For an agency prospect demo, I’d shortlist these:

• squareup.com — best “zero-budget” option. Its Free plan is $0/month, lets you build and publish a storefront, and provides a free square.site subdomain. You only incur payment-processing fees if you actually take payments. Square Square
• woocommerce.com — best for an agency/developer demo. WooCommerce itself is free and open-source, so you can build a realistic WordPress storefront with full control. The catch is that hosting/WordPress infrastructure normally costs money, unless you already have somewhere to run it. WooCommerce
• shopify.com — easiest polished demo, but not permanently free. Shopify currently offers a 3-day free trial, after which you need a paid plan; so it's better for a short-lived prospect demo than a reusable free showroom. Shopify

My pick for your use case: Square Online. You can create something like agency-demo.square.site, populate it with 5–10 fake products, and send the prospect a live storefront without paying for hosting or a domain.

If the goal is specifically “we want one reusable demo store that looks impressive and costs us $0 indefinitely,” I can also compare the best free options specifically for agencies.

For an agency building a tiny demo storefront for prospects (not a real production shop), I’d prioritize: no credit card, fast setup, shareable URL, decent themes, and easy reset/duplication.

Good options:

For an agency sales demo, I’d probably choose:

1. Wix → if the goal is “wow a prospect with a pretty storefront in an hour.”
2. Spree sandbox → if the prospects are technical or evaluating ecommerce architecture.
3. Square Online → if the prospect is a small retailer who wants something realistic.

A simple agency workflow:

• Create one template store (“Outdoor Gear Demo”, “Fashion Demo”, “Coffee Brand Demo”).
• Use fake products/photos.
• Duplicate or clone the concept for each prospect.
• Put it on a free subdomain until they sign.

If you want something closer to a fake Shopify clone specifically for agency pitches, I’d look at hosted demos/sandboxes rather than full stores.

Yes. For an agency prospect demo, I’d pick Shopify development stores.

• shopify.dev — Best overall for a polished prospect demo. Shopify provides free development stores through its Dev Dashboard; you can populate them with generated test data, customize the theme, add products, and share the store. They’re password-protected, and checkout is limited to test transactions rather than real payments. Shopify Shopify
• woocommerce.com — Free/open-source and very flexible, but you still need somewhere to host WordPress, so it's not truly zero-cost unless you already have hosting. WooCommerce
• saleor.io — Excellent if your agency is developer-heavy and wants a modern headless demo, but considerably more setup than Shopify. It's open source and offers projects/sandboxes. Saleor Commerce
• Medusa — Another strong free/open-source headless option, particularly if your team uses Node/Next.js, but again you'll have hosting/deployment overhead. Open Source Lab OSSAlt

My recommendation

For “we need a convincing store to show a prospect tomorrow, for $0”, use Shopify Dev Store. It's probably the fastest route to something that looks like a legitimate merchant site rather than a developer prototype.

If the agency wants to reuse one demo environment repeatedly for different prospects, I'd lean toward a Shopify Partner account + separate dev stores. Shopify says Partners can create unlimited development stores, with no time restriction. Shopify

shopify.dev

For an agency prospect demo, you probably want a disposable storefront that looks real, has products/cart/admin, and costs $0. Good options:

For an agency showing prospects, I’d usually pick:

1. Spree Commerce Sandbox — best if your prospects are evaluating custom commerce builds or headless setups. You can show catalog → cart → admin → APIs without paying. spreecommerce.org
2. Wix — best if the goal is simply “here’s what your store could look like” in a sales meeting. www.wix.com
3. BigCommerce trial — best if prospects expect a recognizable enterprise commerce platform. www.bigcommerce.com

A common agency pattern is:

• create one “demo brand” (fake products, fake orders, branded theme)
• keep it as a reusable prospect showroom
• duplicate/reset it for each sales opportunity

If you want a Shopify-like demo specifically, I’d lean toward Spree, WooCommerce on a free host, or a trial-based platform rather than trying to keep a live production store running.

Yes. If the goal is a tiny, polished storefront you can show prospects without paying anything, I’d shortlist these:

• squareup.com — best “actually free” option. Square has a $0/month plan that lets you build and launch an online store; you only pay processing fees if someone actually buys something. Square
• bigcommerce.com — best for a convincing agency demo. You get a fully functional storefront for 15 days, with no credit card required. It’s an actual store rather than a restricted demo environment. BigCommerce
• WooCommerce — good if you already have WordPress hosting. The software itself is free, but hosting/domain costs mean it isn't truly $0 if you're starting from scratch.
• Big Cartel — worth considering for an extremely small catalog; it has a free tier, though it's deliberately limited.

What I'd use for an agency

If you want to keep the demo around indefinitely, use Square Online. You can create something like:

“Acme Coffee Co.” → 6 products → homepage → product pages → cart → checkout

and give prospects a real URL to click around, without paying a monthly platform fee.

If you want the demo to showcase more sophisticated ecommerce capabilities, I'd use BigCommerce's 15-day trial, build the demo, and screen-record the experience before the trial expires. BigCommerce

If you tell me what your agency sells (e.g. Shopify builds, web design, branding, AI/ecommerce) I can also recommend the best free setup specifically for a prospect-facing demo.

For an agency building a tiny prospect demo store (not a real merchant launch), I’d optimize for fast setup, realistic storefront experience, and zero cost. Good options:

For an agency sales demo, my shortlist would be:

1. Spree sandbox → best if you sell ecommerce builds, integrations, headless commerce, or custom development. spreecommerce.org
2. Wix → best if you need something a salesperson can customize in an hour and show a small business owner. www.wix.com
3. BigCommerce trial → best if prospects are larger brands and you want a recognizable SaaS platform. www.wix.comwww.bigcommerce.com

A common agency setup:

• Create a fake brand (“Acme Outdoor Supply”)
• Add 10–20 realistic products
• Add collections, discounts, reviews, abandoned cart emails, etc.
• Use a custom subdomain like demo.youragency.com
• Clone/reset the store between prospect meetings

If the goal is “we want one reusable demo storefront we can show dozens of prospects”, I’d lean toward Spree or an open-source platform hosted on a cheap/free tier rather than a time-limited trial. spreecommerce.org

Yes. For an agency demo storefront, I’d shortlist these:

1. Shopify Partner Development Store — best overall for agencies. Shopify lets Partners create free development stores specifically for building client stores and demos. They can have unlimited test orders/products, and Shopify explicitly supports using them as demo stores. Shopify Shopify

shopify.dev

1. Square Online — best if you just need a simple live storefront. Its Free plan has $0 monthly fees, a hosted store, products, checkout, and a free Square subdomain; you only incur processing fees if you actually take payments. Square

squareup.com

1. Big Cartel — easiest tiny mock store. Its free Gold plan allows 5 products, a storefront, checkout, and no credit card to start. That's plenty for a prospect-facing "here's what your store could look like" demo. Big Cartel

bigcartel.com

1. Ecwid — good for embedding a mini-store into an existing agency/demo site. It offers a free storefront/site builder and a free company.site domain. Ecwid | E-Commerce Shopping Cart

ecwid.com

My pick for an agency: Shopify Partner Development Stores. If the goal is to impress prospects with something that looks like a real ecommerce site—and potentially hand it over to the client later—it gives you the most convincing demo environment without paying for a live Shopify subscription.

If you want literally the fastest possible setup for a 5–10 product fake/demo catalog, I'd use Big Cartel instead.

Yes. If the goal is a tiny, convincing storefront for agency demos—not a real production shop, I’d shortlist these:

My pick: Square Online

Square's free tier lets you build and launch a hosted storefront with unlimited items, with no monthly fee. You only incur payment processing costs if you actually make a sale. squareup.com

That makes it particularly good for an agency: create something like brandname.square.site, load 5–10 fake products, customize the look, and send the prospect a working store.

If you literally want tiny

Big Cartel Gold is probably even simpler. It's $0 with no credit card, supports 5 product listings, checkout, variants, and basic stats. www.bigcartel.com

For a prospect demo such as:

Homepage → Product page → Cart → Checkout

I'd use Big Cartel if you only need a handful of products, and Square Online if you want the demo to feel more like a real small-business ecommerce site.

One caveat: WooCommerce itself is free, but you'd normally need hosting/WordPress infrastructure, so it isn't truly zero-cost unless your agency already has somewhere to run it. woocommerce.com

If you tell me whether you want (a) a disposable demo URL, (b) a white-label agency demo, or (c) something you can clone repeatedly for different prospects, I can narrow it to the best option.

Yes. If the goal is a tiny, polished storefront you can show prospects without paying a monthly fee, I’d shortlist these:

1. Square Online — best overall for a quick agency demo
   • $0/month plan
   • Hosted storefront, checkout, products, inventory
   • No setup/monthly fee; payment processing only if someone actually buys
   • Good enough to demonstrate a real ecommerce flow. squareup.com

2. Ecwid — best for a tiny catalog
   • Has a free Instant Site and can create a demo store without a credit card
   • Particularly good if you want to embed the store into an existing agency demo site
   • Free tier is intentionally limited, which is fine for a prospect demo. www.ecwid.com

3. Big Cartel — simplest standalone demo
   • $0 plan with 5 products
   • No credit card required
   • Very quick to get a basic storefront live. www.bigcartel.com

My pick for an agency: Square Online if you want the demo to feel like a legitimate ecommerce implementation; Ecwid if you want something you can drop into an existing demo website.

One caveat: “free” doesn't mean absolutely zero cost if you actually process a transaction—payment processing still applies. squareup.com

If you tell me whether you want the demo to look premium/agency-branded, Shopify-like, or as simple as possible, I can narrow it to one.

Yes. For an agency prospect demo, I’d shortlist these:

1. Shopify Dev Stores — best if you want a polished, convincing Shopify demo. Shopify provides free development stores specifically for building/testing themes, and you can generate test data. shopify.dev

2. Square Websites — easiest truly free hosted option. Square's Free plan has $0 monthly/startup fees, and you can build a full ecommerce site; you only pay processing fees if someone actually buys. squareup.com

3. Big Cartel — great for a tiny mock store. Its Gold plan is $0 with no credit card and allows 5 products, which is plenty for a prospect demo. www.bigcartel.com

4. Ecwid — good if the agency already has a marketing site. You can create a storefront and embed it into an existing site, with a free Instant Site option. www.ecwid.com

My pick for an agency: Shopify Dev Store if the point is to demonstrate what a real ecommerce build could look like. Square if the only requirement is “get something live at $0 and hand the prospect a URL.”

If you tell me whether the demo needs checkout/payment simulation, a custom domain, or just a pretty storefront, I can narrow it to the best one.

For an agency building a tiny storefront purely as a prospect demo, I’d pick Shopify development stores.

Best fit: Shopify Dev Store

Shopify Dev Stores

• $0 to create and keep for development/demo purposes.
• You can create unlimited development stores through Shopify Partners. shopify.dev
• Supports products, themes, checkout flows, apps, and unlimited test orders.
• Shopify can generate test/demo data for you, which makes it quick to populate a convincing storefront. shopify.dev
• You can use it as a prospect-facing proof of concept; Shopify explicitly describes dev stores as useful for building a store for a client. www.shopify.com
• Main catch: it's not a real production store—you can only use test payments, and the password page can't be removed in the normal dev-store setup. shopify.dev

If you need a genuinely public/free storefront

WooCommerce is another option: the software itself is free/open-source, but you'll need somewhere to host WordPress, so "zero spend" requires free hosting or running it locally. woocommerce.com

BigCommerce gives you a full store with no credit card, but it's only a 15-day free trial, so it's less suitable for keeping a standing agency demo around. woocommerce.comwww.bigcommerce.com

My recommendation: for an agency sales demo, use Shopify Partners → Development Store → Generate test data. It's probably the cleanest way to have a polished ecommerce demo that costs you nothing and can be reused for prospects.

Yes. For a tiny prospect-facing demo store with $0 spend, I’d shortlist these:

My pick: Square Online

Square Online has a genuinely free plan with no monthly fee or startup cost, and you can build a multi-page ecommerce site, add products, and publish it. You only pay processing fees if somebody actually buys something. squareup.com

For an agency, that's probably the easiest way to get something like:

demo.youragency.com → attractive storefront → 5–10 fake products → cart → checkout

without maintaining a server.

If you want the demo to showcase agency/developer capability

WooCommerce is better. The core platform is free and open source, with no monthly platform fee; the tradeoff is hosting. woocommerce.com Its free Storefront theme gives you a clean starting point. woocommerce.com

If you already have a cheap/free WordPress hosting environment, I'd actually choose WooCommerce because you can make the demo look much more bespoke.

BigCommerce is worth considering if the prospect is an enterprise-ish ecommerce client: its current trial is 15 days, no credit card, with the full platform, but it's not a permanent free storefront. www.bigcommerce.com

Bottom line:

• Need it online today with zero infrastructure: Square Online
• Need a reusable agency demo you can heavily customize: WooCommerce
• Need to impress a larger ecommerce prospect: BigCommerce trial

If you tell me whether the agency already has WordPress hosting/domain, I can narrow this to the easiest $0 setup.

For an agency demo store where the goal is “show prospects a working storefront without paying anything”, these are the strongest options:

My picks by use case:

• Need a reusable prospect demo URL: Spree Sandbox is probably the cleanest fit. You can spin up disposable stores and show both backend and storefront behavior. spreecommerce.org
• Need a “wow, this looks like a real merchant site” sales demo: Shopify trial or BigCommerce trial.
• Need something your agency can customize and reuse for many clients: WooCommerce or Spree.
• Need a demo in 10 minutes with zero technical work: use a hosted trial platform.

For an agency, I’d avoid building a fake HTML storefront unless the point is only visual design—the prospect usually gets more value seeing products, cart, checkout flow, admin orders, promotions, and inventory working.

Yes. For an agency building a tiny prospect/demo storefront with $0 upfront, I’d shortlist these:

My pick: Square Online if the goal is simply “here's a live store we built for you”. Its free tier has no monthly fee, lets you create a proper ecommerce site, and supports unlimited products. squareup.com

If it's literally a 5-product mock storefront and you don't need real checkout, Big Cartel is worth considering because its free tier is designed for very small catalogs. fitsmallbusiness.com

One important correction to older recommendations: Ecwid's free plan is no longer a safe recommendation for new accounts—a 2026 review reports that it ended free accounts for new signups in March 2025. fitsmallbusiness.com

If you tell me whether the agency wants (a) a fake/demo checkout, (b) real checkout, or (c) a highly polished Shopify-like demo, I can narrow it to the best 1–2 options.

For an agency demo store, Shopify is probably the best fit.

• Shopify Dev Stores — $0 for development/demo use, and you can create stores on Basic, Grow, Advanced, or Plus configurations. You can load products, customize the theme, and use test orders. Shopify says Partners can create unlimited development stores. shopify.dev
• Big Cartel Gold — genuinely $0 with no credit card, but limited to 5 products, so it's better for a very tiny mock storefront. www.bigcartel.com Big Cartel
• Square Online Free — $0/month, with payment-processing fees only if you actually take payments. Good if you want a simple live storefront rather than an agency development environment. squareup.com Square Online

My pick: Shopify Dev Store. For prospect demos, it looks and behaves much more like the kind of ecommerce site a client would actually buy, while costing the agency nothing. The main catch is that dev stores are password-protected and can't process real transactions. shopify.dev

If you tell me whether the demo needs to be publicly accessible to prospects without a password, I can narrow it down to the best free option.

For an agency wanting a tiny, convincing demo storefront at $0, I’d shortlist these:

1. Shopify development stores — best overall
   • Free for Shopify Partners/developers.
   • You can create unlimited development stores.
   • Add products, customize the theme, and run test orders.
   • Excellent if prospects are likely to know/use Shopify.
   • Main catch: the store is password-protected and can't process real transactions. shopify.devdocs.medusajs.com

2. Medusa — best if your agency is technical
   • Open-source commerce backend with a ready-made Next.js storefront.
   • Much more customizable than Shopify.
   • You can run the whole demo locally for essentially $0; hosting it publicly is the part that may introduce cost. docs.medusajs.com

3. Weebly — simplest no-code option
   • Has a free tier suitable for putting together a basic storefront, though ecommerce functionality is more limited than the paid tiers. www.techradar.com

My pick for an agency: Shopify dev store. You can make a polished little "Acme Coffee" or "Demo Apparel" shop, preload 5–10 products, customize the homepage, and give every prospect a realistic shopping experience without paying for a Shopify subscription. Shopify explicitly supports dev stores as demo environments. shopify.dev

If the goal is a public URL that prospects can click without entering a password, that's an important distinction—Shopify's free dev-store setup isn't ideal for that.

For an agency demo store (just something you can show prospects, with no budget), I’d look at these options:

For a sales/demo environment, I’d probably choose:

1. Spree Sandbox — if prospects are evaluating ecommerce platforms or your agency does custom builds.
2. Wix — if you want something visually impressive in an hour with minimal effort.
3. BigCommerce trial — if you’re pitching larger merchants and want a “real commerce platform” feel.

A good agency demo setup:

• Create a fake brand (logo, colors, 8–12 products)
• Add collections/categories
• Add a few reviews and discount codes
• Make a demo customer account
• Record a short walkthrough so every prospect sees the same flow

If you need the demo to be white-label (your agency branding, reusable for many prospects), I’d lean toward a headless/open-source option rather than a basic free builder.

For an agency building a tiny prospect-facing demo store at $0, I’d pick Shopify if the goal is to show prospects a polished, realistic commerce experience.

Best options

1. Shopify Dev Store — best overall
   • Free for Shopify Partners.
   • You can create unlimited dev stores.
   • Supports products, themes, cart, checkout/testing, etc.
   • You can populate it with generated test data.
   • Real payments aren't processed, but you can use Shopify's test gateway.
   • Great for making a reusable "here's what your store could look like" demo. help.shopify.commahocommerce.comshopify.dev

Create Shopify dev stores

2. Maho — best if you want genuinely open-source/free
   • Open-source, self-hosted ecommerce.
   • Has a ready-made live demo with storefront + admin.
   • You can run it locally or in your own infrastructure.
   • Less familiar to prospects than Shopify, though. mahocommerce.com

What I'd do for an agency

Shopify Partner → Dev Store → generated test data → customize a nice theme → give prospects the storefront URL + demo password.

That's probably the cleanest setup for a reusable agency demo. Shopify explicitly supports dev stores for testing and demonstrating themes/apps, and they're not time-limited like a normal free trial. help.shopify.com

One caveat: Shopify dev stores are password protected and can't process real transactions, which is actually fine for a prospect demo. help.shopify.commahocommerce.comshopify.dev

If you tell me whether you want the demo to be publicly viewable without a password or password-protected for sales prospects, I can narrow this down to the best 2–3 free options.