How Much Does an Ecommerce Website Cost in the UK? (2026 Guide)

Ask three agencies about ecommerce website cost in the UK and you will get three wildly different numbers. You are not being messed about, you are being quoted for three different jobs.

How much does an ecommerce website cost in the UK?

For most UK small and medium businesses, the ecommerce website cost in the UK sits between £2,000 and £15,000 to build, with simple template stores starting nearer £1,000 and larger catalogue or integration-heavy builds running well past £30,000. The build price, though, is the part everyone quotes and the part that matters least over three years. Platform fees, payment processing, apps and maintenance usually cost more than the original build by year two, and almost nobody puts those in the proposal.

Here is the honest range by build route:

Build route	Typical upfront cost	Best suited to
DIY on a hosted platform	£0 to £500	Testing an idea, under 20 products
Template store, lightly customised	£1,000 to £3,000	First proper shop, standard products
Freelancer, custom theme	£2,500 to £6,000	Established shop with a brand to protect
Agency build, custom design	£6,000 to £20,000	Real revenue, integrations, growth plans
Bespoke or headless build	£20,000 and up	Complex catalogues, multi-currency, custom logic

These are market ranges, not a price list. Two shops with identical product counts can differ by a factor of five, and the reason is almost never the design.

What actually drives an ecommerce website cost

The single biggest cost driver is not how the site looks. It is how many decisions your business has already made. A shop that knows its shipping rules, its returns policy, its VAT position and how stock will be kept accurate is a cheap build. A shop that works those out during the project is an expensive one, because every unresolved question turns into rework.

After that, the drivers in rough order of impact are:

• Catalogue complexity. Fifty simple products is a small job. Fifty products with size, colour, material and made-to-order options is a much bigger one, because every combination needs a price, a stock position and often an image.
• Integrations. Connecting to accounting software, an EPOS till, a warehouse system or a supplier feed is usually the most underestimated line in any quote. Each connection is a small software project with its own failure modes.
• Content readiness. Product photography, descriptions and specifications are frequently excluded from the build price and then quietly become the thing that delays launch by two months.
• Shipping and tax logic. Zone-based pricing, free-delivery thresholds, click and collect, and selling into the EU all add configuration work.
• Migration. Moving an existing shop means carrying over products, customers, orders and URLs. Done properly, with redirects mapped, this is a meaningful chunk of the budget. Done badly, it costs you your search rankings.

Returns are the quiet one on that list. UK distance selling rules give most online customers a 14-day right to cancel, and the government's guidance on returns and refunds sets out what you have to honour. Deciding how returns are requested, authorised and refunded before the build starts is free. Bolting a returns workflow onto a live shop is not.

Design sits surprisingly far down that list. A well-built template with strong ecommerce design fundamentals will out-earn an expensive bespoke design that nobody tested.

Six costs that never appear on the build quote

Platform subscription

A hosted platform is a permanent line on the P&L, not a one-off. Budget from roughly £230 a year at entry level to £3,000 or more once you are on a higher plan.

Payment processing

Card fees are charged on every single order and scale directly with revenue. At around 2% plus a fixed pence charge, a shop turning over £250,000 pays comfortably over £5,000 a year just to take money.

Apps and plugins

Reviews, subscriptions, advanced shipping, loyalty and email tools are mostly monthly subscriptions. Six modest apps at £20 a month is £1,440 a year, and app creep is real.

Maintenance and security

Someone has to apply updates, monitor uptime and fix what breaks. On self-hosted platforms this is not optional, because an unpatched shop taking card details is a genuine liability.

Content and photography

New products need new images and copy for as long as you trade. This is an ongoing operating cost, not a launch task, and it is the one most often left out entirely.

Getting traffic

A shop with no marketing budget is a shop with no customers. Whatever you spend building it, assume you will need a comparable sum in year one to make anyone visit.

Platform and payment fees: what UK stores actually pay

Most UK guides on this topic quote dollars, which is not much use when you are budgeting in pounds. At the time of writing, Shopify's published UK pricing starts at £19 a month for Basic, £49 for Grow and £259 for Advanced, with card rates on the entry plan advertised from 2% plus 25p per transaction. Billing terms and promotional rates change, so treat those as a starting point and check the current page before you commit.

WooCommerce inverts the model. The plugin itself is free, but you then pay for hosting, security, backups and extensions individually, and you own the maintenance burden. It also carries real server requirements, which is the polite way of saying that £3 a month shared hosting will not run a shop properly. For a store of any real size, WooCommerce is rarely cheaper than a hosted platform once you cost in the time somebody spends keeping it healthy. It is more flexible, which is a different argument and often a good one.

The useful way to compare platforms is not by headline price but by which costs are bundled and which land on you separately:

Platform	What the fee covers	What you pay for separately
Hosted (Shopify and similar)	Hosting, security, updates, PCI compliance, support	Apps, theme, transaction fees if you use an external gateway
Self-hosted (WooCommerce)	Nothing. The plugin is free	Hosting, SSL, backups, security, extensions, developer time
Site builder with a shop bolted on	Hosting, templates, basic catalogue	Product limits, weaker merchandising, migration cost later
Enterprise or headless	Licence, uptime guarantees, account management	Front-end build, integrations, specialist developers

The number that surprises people most is payment processing, because it is the only cost that grows in direct proportion to success. At roughly 2% plus a fixed fee, processing is a rounding error at £20,000 of turnover and a serious line item at £500,000. We break the platform side of this down further in our guide to the real cost of running a Shopify store.

One more UK-specific trigger worth planning for: once your taxable turnover passes the VAT registration threshold, currently £90,000 according to HMRC, you must register for VAT. That changes how you display prices, how you handle EU sales and often how your checkout is configured, so it is cheaper to build with it in mind than to retrofit it.

What an ecommerce website costs per month

Plenty of people search for this cost as a monthly figure, because that is how it hits the bank account. Spreading the build over a sensible replacement cycle of three years, here is what the same shop looks like per month at three different sizes.

Shop size	Build, amortised over 3 years	Running costs	Total per month
Starter, under £50k turnover	£40	£90	Around £130
Growing, £250k turnover	£220	£880	Around £1,100
Established, £1m turnover	£550	£3,200	Around £3,750

Read the pattern rather than the precise figures. The build barely moves as the shop grows, while running costs scale almost linearly with turnover, because processing fees and app tiers track revenue. That is why the monthly cost of a larger shop is dominated by lines that no agency quote will ever contain.

The three year total cost of ownership

This is the calculation almost no pricing guide shows you, and it is the one that should drive the decision. Take a mid-sized UK shop on a hosted platform, turning over £250,000 a year.

Cost line	Year 1	Years 2 and 3 (each)
Build	£8,000	£0
Platform subscription	£590	£590
Payment processing	£5,250	£5,250
Apps	£1,440	£1,440
Maintenance and support	£1,800	£1,800
Content and photography	£1,500	£1,500
Total	£18,580	£10,580

Two things shift that model sharply. The first is turnover, because processing is the only line tied directly to sales: double the revenue and you add roughly £5,000 a year without touching anything else. The second is platform choice. A self-hosted WooCommerce store swaps the subscription for hosting and developer time, which can be cheaper at small scale and is usually dearer once you need managed hosting, staging and someone on call for updates.

Over three years that shop spends about £39,740, of which the build is roughly a fifth. This is why haggling £1,500 off a build quote while ignoring a 0.4% difference in card rates is the wrong optimisation: on £250,000 of turnover, that card rate difference costs £1,000 every year, forever.

It also reframes what a good build is worth. If a better-built shop converts at 2.4% instead of 2.0%, that is a 20% revenue increase on the same traffic. On £250,000 of turnover it pays for the entire three-year cost of ownership several times over, which is the actual argument for spending more rather than less. Our conversion rate optimisation playbook covers how to move that number deliberately.

The cheapest way to launch a UK online shop that still works

Low cost and cheap are not the same thing. A cheap shop is one that cost little and will have to be rebuilt. A low-cost launch is a deliberate decision to spend nothing on the parts that can be added later, so the money goes where it changes revenue.

If your budget is genuinely under £1,500, this is the sequence that holds up:

1. Take a paid theme, not a free one. A £150 to £250 theme buys tested checkout and mobile behaviour. Free themes routinely cost more in developer time than the theme would have cost.
2. Launch with 20 to 30 products, photographed properly. Good photography on a small range beats phone snaps on a large one, both for conversion and because thin product pages will not rank.
3. Write your own product copy. It is the highest-value unpaid work available to you, and nobody knows the products better.
4. Configure shipping and returns before you open. Free to do now, expensive to unpick once orders are flowing.
5. Install nothing beyond analytics and one email tool. App subscriptions are where low-cost stores quietly become expensive stores.
6. Keep £300 back for a checkout review after 50 orders. By then you have real data on where people drop out, which is worth more than any pre-launch opinion.

The trade-off is honest: you will hit a ceiling. Stores built this way tend to struggle once the catalogue passes a few hundred products or the first integration is needed. That is a good problem, and by then the shop should be funding its own replacement.

DIY, freelancer or agency: who should build your shop

Most of the price gap between quotes comes down to this choice, so it is worth making it deliberately rather than by whoever replied first.

• DIY suits an unproven proposition. If you do not yet know whether people will buy, spending £8,000 to find out is poor risk management. Build it yourself, sell fifty orders, then decide.
• A freelancer suits a clear brief and a patient client. You get better value per hour and a direct line to the person doing the work. You also carry the project management, and cover is thin when they are ill or busy with another client.
• An agency suits revenue that is already at risk. Once the shop is the business rather than an experiment, the things you are buying are continuity, accountability and someone who has migrated a catalogue before without losing the rankings.

The expensive mistake is mismatching the two ends: paying agency rates to validate an idea, or running a £400,000 shop on a build nobody is responsible for maintaining. You can see how we scope and price this on our ecommerce website development page.

How to read an ecommerce quote, and what to cut

Having quoted a lot of these, the items that inflate a proposal most are rarely the ones clients expect. Custom checkout work, bespoke product configurators, live stock synchronisation with an offline till, and anything involving a supplier's data feed are the expensive ones. Bespoke visual design, by contrast, is usually a modest fraction of the total.

Before you compare two quotes, check that they answer the same five questions. If they do not, the cheaper one is not cheaper, it is smaller.

• Who supplies product content? Copy and photography for 200 products is weeks of work and often sits outside the quote entirely.
• Is migration and redirect mapping included? On a replatform this is the line that protects your existing search traffic.
• What happens after launch? A low build price attached to a vague or costly support arrangement is a standard way to look competitive.
• Which integrations are in scope, and which are phase two? Get this in writing, with the phase two cost estimated.
• Who owns the site and the accounts? You should own the domain, the platform account and the analytics property. Always.

If the number comes back higher than your budget, cut in this order:

1. Phase the integrations. Launch with manual stock updates and automate once volume justifies it. This is the single biggest saving available on most projects.
2. Start with a customised template. Take the design budget down, not the build quality. You can redesign a shop that is making money.
3. Reduce the launch catalogue. Ship your best 30 products properly rather than 300 badly. Thin, duplicated product pages will not rank anyway.
4. Defer the nice-to-haves. Loyalty schemes, subscriptions and wishlists can wait until you have customers to use them.

What not to cut: mobile performance, the checkout flow, analytics and tracking, and redirects on a migration. Those four are cheap to do at build time and expensive to fix later. The same logic applies to ecommerce user experience generally, where small structural decisions compound. It is also worth budgeting for ecommerce SEO from the start, because category and product page structure is far cheaper to get right during the build than to retrofit afterwards.

If you are weighing this up against a standard brochure site, our broader UK website cost guide covers the non-ecommerce routes.

Frequently asked questions