We get asked this almost every week. And every time, I have to resist the urge to just say “it depends” because that’s not actually helpful. So here’s my honest breakdown of what you’ll pay, why the numbers vary so wildly, and what I’d tell a friend asking the same question.
How much does an ecommerce website cost in the UK?
In 2026, a UK ecommerce website typically costs between £2,000 and £50,000+ to build, depending on size, platform and complexity. Ongoing costs (hosting, maintenance and marketing) add £3,000-£10,000+ per year.
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Ecommerce website cost at a glance
Here’s what UK businesses typically pay in 2026, broken down by store type.
Starter Store
£2,000 - £6,000
Ready-made theme, essential pages, product listings, basic checkout setup.
- Up to ~100 products
- Standard checkout
- Mobile optimised
- Basic SEO setup
Custom Store
£6,000 - £20,000
Bespoke design, improved UX, product filters, multi-currency checkout.
- Custom design & UX
- Advanced filters / search
- CRM / payment integrations
- Conversion optimisation
Enterprise Store
£20,000 - £50,000+
Fully custom build, complex integrations, CRM/ERP connections, high-end design.
- Full bespoke architecture
- ERP / fulfilment integration
- Multi-currency & language
- Dedicated support
* Figures reflect typical UK agency pricing in 2026. Exact costs depend on platform, feature set and level of support required.
Why prices vary so much
I’ve seen quotes go from £500 to well over £100,000 for what clients describe as “basically the same thing.” That gap isn’t anyone being dodgy, it’s because no two ecommerce projects are actually the same, even when they sound similar on paper.
Think of it like fitting out a physical shop. A local boutique and a flagship retail chain are both “shops,” but the fit-out cost is completely different. The same logic applies online. The UK is one of Europe’s most competitive ecommerce markets, which means the bar for what a “good” store looks like keeps rising, and so does the investment needed to clear it.
£2,000+
Minimum realistic build cost (agency)
8-14
Weeks for a typical custom build
10-20%
Of build cost budgeted annually for maintenance
£800+
Per month for ecommerce SEO
What drives the cost of an ecommerce website?
1. Platform choice
In my experience, platform choice is where most of the early budget confusion comes from. WooCommerce is open-source with no licence fee, but you’re responsible for hosting and keeping plugins updated. Shopify is simpler to manage day-to-day, but those monthly fees add up fast, especially once you start adding apps. Neither is universally “better”, it really depends on your business.
| Platform | Licence Cost | Monthly Hosting | Best For |
|---|---|---|---|
| WooCommerce | Free | £10-£50 | Flexible, content-led stores, strong SEO control |
| Shopify | £29-£299+/mo | Included | Fast launch, ease of use, DTC brands |
| Magento | £5k-£20k+ setup | £100-£500 | Large catalogues, enterprise operations |
| Custom Build | £20,000+ | Varies | Unique requirements no platform covers |
2. Design and user experience
This is the bit I care most about, honestly. Research shows it takes as little as 50 milliseconds for a visitor to form an opinion of your site. In ecommerce, that first impression is everything.
A template gets you live quickly and cheaply. But I’ve seen too many businesses spend £3,000 on a theme-based store, struggle to convert, and then come back 18 months later wanting a proper custom build. If you’re serious about selling online, the design investment is usually worth doing properly from the start.
3. Functionality and features
Every feature you add costs development time, that’s just the reality. I always ask clients to split their wishlist into “must-haves” and “nice-to-haves” before we talk budget. The must-haves go into the brief; the nice-to-haves get phased in later. Common additions that affect cost:
- Product filters and search – essential for stores with 50+ products
- Subscriptions or memberships – recurring revenue models need extra development
- Custom checkout flows – multi-step, branded or simplified checkout experiences
- Multi-currency and multi-language – required for cross-border selling
- Product configurators – custom sizing, personalisation, build-your-own features
- Wishlists and user accounts – reduces drop-off from returning visitors
4. Integrations
Integrations are one of the most underestimated cost areas I come across. Connecting your store to an accounting package or a fulfilment system sounds simple, but each one takes real time to configure, test and make reliable. Here’s a rough guide to what they add to a project:
| Integration Type | Examples | Typical Added Cost |
|---|---|---|
| Payment gateways | Stripe, Klarna, PayPal, Worldpay | £200-£800 |
| Accounting software | Xero, Sage, QuickBooks | £300-£1,000 |
| CRM systems | HubSpot, Salesforce | £500-£2,000 |
| Fulfilment / shipping | Royal Mail, DHL, UPS | £300-£1,000 |
| ERP / inventory | Brightpearl, Linnworks | £1,000-£3,000+ |
5. Upfront technical costs
These are the line items that tend to catch people out. They’re not huge individually, but they add up, and they’re often not included in a basic agency quote:
| Item | Typical Cost |
|---|---|
| Domain name | £10-£30/year |
| SSL certificate | Often free; premium from £50/year |
| Professional photography | £300-£1,500+ |
| Copywriting / product descriptions | £500-£3,000+ |
| Email hosting | £3-£10/user/month |
| Branding / logo (if needed) | £300-£2,000+ |
Platform comparison: WooCommerce vs Shopify vs Magento
Here’s how I’d compare the three platforms I see most often with UK clients.
| Criteria | WooCommerce | Shopify | Magento |
|---|---|---|---|
| Licence cost | Free | £29-£299+/mo | Free / £20k+/yr |
| Hosting | Self-managed | Included | Self-managed |
| Ease of use | Moderate | Easy | Complex |
| Flexibility | Very high | High | Very high |
| SEO control | Excellent | Good | Excellent |
| Plugin/app costs | £0-£300+/yr | £0-£500+/yr | £0-£1,000+/yr |
| Best for | SMEs, content-led stores | Fast-growing DTC brands | Enterprise, large catalogues |
DIY vs freelancer vs agency: which should you choose?
Honestly, there’s no wrong answer here, it depends entirely on what you’re trying to achieve.
| Factor | DIY | Freelancer | Agency |
|---|---|---|---|
| Typical cost | £200-£600/yr | £1,500-£8,000 | £3,000-£50,000+ |
| Time to launch | 1-4 weeks | 4-10 weeks | 6-16 weeks |
| Design quality | Template | Variable | Bespoke |
| Custom features | ✗ | ~ | ✓ |
| Ongoing support | ✗ | ~ | ✓ |
| SEO & marketing | ✗ | ✗ | ✓ |
| Single point of failure risk | Low | High | Low |
Ongoing ecommerce costs breakdown
This is the part most people don’t budget for properly, and it catches them out 6 months after launch. Here’s what to expect.
How long does it take to build an ecommerce website?
| Store Type | Typical Build Time |
|---|---|
| Small starter store (template-based) | 3-6 weeks |
| Medium custom store | 8-14 weeks |
| Large / enterprise store | 16-30+ weeks |
If someone tells you they can deliver a fully custom ecommerce site in 2-3 weeks, I’d be very cautious. A proper build needs time, for discovery, design, development, testing and launch. Cutting corners here almost always shows up as problems after go-live, and fixing them costs more than doing it right first time.
How to get an accurate quote
The more you can tell an agency upfront, the more accurate and useful their quote will be. Before reaching out, I’d recommend having answers to these:
- What platform are you considering (or open to recommendations)?
- How many products will you sell (approximate SKU count)?
- What integrations do you need (accounting, CRM, fulfilment, payment gateways)?
- Do you have existing branding (logo, brand guidelines, photography)?
- What are your specific UX or functionality requirements?
- Do you need ongoing support (maintenance, SEO, paid ads)?
- What is your target launch date?
I’d always recommend getting at least two or three quotes, and making sure each one is covering the same scope. It’s surprisingly easy for two agencies to quote completely different things and have the numbers look like-for-like when they’re not.
Ecommerce website FAQs
How much does a basic ecommerce website cost in the UK?
A basic ecommerce website using a ready-made theme typically costs £2,000-£6,000 from a UK web design agency. This covers essential pages, product listings and a working checkout. If you build it yourself using a platform like Shopify, you can get started from around £29/month.
What is the cheapest way to build an ecommerce website?
The cheapest route is a DIY hosted platform like Shopify or WooCommerce with a free theme, which can be as little as £200-£300 per year. You’ll invest significant time and may hit limitations as your business grows, but it’s a viable way to test a product idea before committing to a custom build.
Is WooCommerce cheaper than Shopify?
WooCommerce has no monthly platform fee, which can make it cheaper upfront if you’re comfortable managing hosting and plugins yourself. Shopify is more expensive monthly but is easier to manage. Over a 3-year period, the total cost of ownership is often similar between the two.
How much should I budget for ecommerce website maintenance?
Most UK businesses should budget £600-£2,400 per year for basic maintenance (updates, security, backups). Add SEO and marketing support and the annual investment rises considerably — from £5,000 to £30,000+ depending on your goals and the competitiveness of your sector.
Does an ecommerce website buld cost include SEO?
Not usually. SEO is typically sold as a separate ongoing service. Most UK agencies charge between £400 and £2,000+ per month for ecommerce SEO, depending on the size of the store and the level of competition in your market.
Can I get a fixed-price quote for an ecommerce website?
Yes. A reputable UK agency should provide a fixed or capped-budget quote once they’ve understood your requirements through a discovery process. Be wary of very vague estimates with no defined scope. These often lead to scope creep and unexpected costs.
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