How Much Does an E-commerce Website Cost in the UK? (2026 Price Guide)

"How much will it cost?" is the first question every business owner asks about a new online store, and the honest answer is "it depends" — which is no help at all when you are trying to set a budget. So here are real figures: the ranges we see for UK and US businesses in 2026, what drives a project up or down, and how to avoid paying for things you don't need.

The short answer

These are indicative UK ranges; US pricing is broadly similar in dollars. Now let's look at what moves a project within — or beyond — those bands.

The seven things that drive e-commerce cost

1. Catalogue size and complexity

Fifty simple products is a very different job from 20,000 SKUs with variants, bundles, configurable options and supplier feeds. Complex catalogues need product-information management, import tooling and careful performance work.

2. Design: template vs bespoke

A quality theme with brand styling costs £500–£3,000. A fully bespoke UX with custom product pages, configurators and a designed checkout runs £5,000–£25,000. Bespoke design pays off when your conversion rate matters more than your launch date — usually once you are past £250k a year in online sales.

3. Integrations

This is where budgets most often go wrong. Common integrations and their typical cost when done properly:

• Payment gateways (Stripe, PayPal, Klarna, Apple/Google Pay): £300–£1,500
• Accounting (Xero, QuickBooks, Sage): £1,000–£4,000
• Courier and shipping (Royal Mail, DPD, UPS, FedEx, ShipStation): £800–£3,000
• ERP, warehouse or EPOS systems: £3,000–£20,000+ depending on the system and whether an API exists
• Marketing (Klaviyo, Mailchimp, Meta and Google feeds): £300–£2,000

4. B2B features

Trade accounts, customer-specific pricing, quotes, minimum order quantities, credit terms and approval workflows add £5,000–£25,000 to a build but are usually the whole point for wholesalers and distributors.

5. Content migration

Moving products, customers, order history and URLs from an old store — while protecting your search rankings with proper redirects — is typically £1,000–£8,000. Skipping the SEO work here is the most common cause of a sales drop after relaunch.

6. Mobile app

If you want a native iOS/Android shopping app alongside the web store, budget an additional £15,000–£60,000. For most retailers a fast, well-built mobile web store is the better first investment; apps make sense once you have a loyal, repeat-purchase customer base.

7. Ongoing support and growth

A store is never "finished". Plan for hosting, security updates, platform upgrades, and a monthly pot for conversion improvements. A sensible support retainer is £300–£1,500 a month for platform stores and more for custom builds.

Platform vs custom: how to decide

Choose a platform (Shopify, WooCommerce, Magento) when your buying journey is standard, you want to launch quickly, and you are comfortable with monthly fees and app subscriptions. Shopify in particular is excellent for D2C brands; Magento / Adobe Commerce suits larger catalogues and B2B.

Choose custom or headless when the shopping experience itself is your differentiator (configurators, subscriptions, quoting, bespoke fulfilment), when you need to plug deeply into your own ERP or warehouse, or when platform transaction fees and app costs have become a significant line on your P&L.

Five ways to keep the cost down without cutting corners

1. Launch in phases. Go live with the core catalogue and checkout, then add B2B, subscriptions or apps once revenue is flowing.
2. Get product data ready before the build starts. Clean spreadsheets with images, descriptions and attributes save weeks of paid time.
3. Use proven integrations where they exist. Don't pay for a custom Xero connector if a maintained one does the job.
4. Insist on a fixed-price scope. Time-and-materials builds without a clear scope are how £20k projects become £45k projects.
5. Budget for after launch. Stores that improve every month outperform stores that launched perfectly and then stood still.

What a quote from NHZ Global looks like

Our e-commerce development team builds on Shopify, WooCommerce, Magento and fully custom stacks, for retailers and wholesalers in the UK and USA. Every project starts with a short discovery session, after which you receive a fixed-price, itemised proposal — design, build, integrations, migration and support listed separately so you can see exactly where the money goes and remove anything you don't need.

Ready for a real number instead of a range? Request a free e-commerce quote, or call our Slough office on +44 208 0770404 or our San Jose office on +1 201 799 9888.

Frequently asked questions

How long does an e-commerce website take to build?

A template store: 2–4 weeks. A customised platform store: 8–14 weeks. A custom or headless build: 3–6 months, usually phased.

Is Shopify cheaper than Magento?

To launch, yes. Over three to five years it depends on your volume: Shopify's transaction fees and app subscriptions grow with sales, whereas Magento's costs are mostly development and hosting. Above roughly £1m a year in online revenue the comparison is worth doing properly.

Do I need a mobile app as well as a website?

Usually not at first. Make sure the web store is fast and easy on mobile, then consider an app once you have repeat customers who would benefit from push notifications and one-tap reordering.

Can you migrate my existing store without losing Google rankings?

Yes, provided URL mapping and redirects are planned before launch. We treat this as a core part of every migration rather than an afterthought.