“How much does an ecommerce website cost?” is a bit like asking how much a car costs — the honest answer is “anywhere from a runaround to a supercar, depending on what you need it to do.” But vague answers don’t help you budget, so here’s a straight 2026 breakdown for UK businesses, including the ongoing costs most quotes conveniently leave out.
The three tiers of ecommerce build cost
Starter store — £1,500–£5,000
A clean, professional shop built on a proven platform (WooCommerce or Shopify), with your branding, a manageable number of products, standard payment and delivery options, and the essentials done properly. This suits most businesses launching online or replacing a tired old store. At the lower end you’re often on a template; at the upper end you’re getting a bespoke design and more careful setup.
Mid-range custom store — £5,000–£15,000
Here you’re paying for a genuinely custom design, larger catalogues, more complex products (variations, bundles, subscriptions), integrations with your accounting or stock systems, and a build tuned for speed and conversion rather than just “it works.” This is the sweet spot for established businesses doing real volume online.
Fully bespoke — £15,000–£50,000+
Custom functionality, unusual business rules, high traffic, integrations with warehouses or ERPs, multi-currency, B2B portals. If your store is your business, this is the territory — and it’s where a team that can actually build custom software (not just install plugins) earns its keep.
The costs everyone forgets
The build price is only half the story. Budget for the running costs too:
- Hosting: ecommerce needs more than £3 shared hosting — realistically £15–£50+/month for something that stays fast under load.
- Payment fees: typically 1.4%–2.9% + ~20p per transaction (Stripe, PayPal, etc.). This never goes away.
- Platform fees: Shopify charges a monthly subscription (roughly £19–£259/month) plus extra transaction fees unless you use Shopify Payments. WooCommerce has no platform fee, but you pay for hosting and any premium extensions.
- Maintenance: stores need more care than brochure sites — see our guide on website maintenance costs.
- Getting found: a shop nobody can find earns nothing — factor in SEO costs and marketing.
Why the same shop can cost £3k or £30k
The single biggest driver is how custom it is. A template store with off-the-shelf plugins is fast and cheap to launch but limited. A bespoke build costs more upfront but does exactly what your business needs and doesn’t hit a wall as you grow. Most small businesses genuinely don’t need the £30k version — but some do, and being sold the wrong one in either direction is expensive.
Platform matters too
Your choice of platform quietly shapes the cost over years, not just at launch. We’ve written a full comparison of WooCommerce vs Shopify for UK small businesses — worth reading before you commit, because switching later is painful.
Our take
We build ecommerce on WooCommerce because you own it outright, there are no platform lock-ins or forced transaction fees, and — crucially — we can build custom functionality when your business needs something the standard tools can’t do. We’ll always tell you honestly which tier you actually need rather than upselling you into a supercar to do the school run. See our ecommerce web design or our pricing to get a realistic figure for your situation.
Ballpark to remember: most UK small business stores land in the £2,000–£8,000 range to build, plus ongoing hosting, fees and maintenance. Anything much cheaper, ask what’s being cut; much more, ask what you’re really getting.