Web development
The running costs are published and can be added up exactly. The build fee is the part nobody can quote you from a blog post, and this explains what moves it.
Website pricing articles almost all work the same way. They print three bands, a small site at one price, a bigger one at another, an ecommerce build at a third, and none of the numbers carry a source. They are the writer’s impression of what agencies charge, formatted to look like research.
A website bill splits into two parts that behave completely differently. The running costs are published by the companies that charge them and can be added up to the penny. The build fee is quoted per project and depends on decisions you have not made yet. This article does the first part exactly and tells you what moves the second.
There are two numbers and they behave differently. The running costs are published by the platforms and payment providers, so they can be added up to the penny before you speak to anyone. The build fee cannot, because it is priced against scope rather than against a page count, and any agency quoting one before seeing your requirements is quoting a different project to the one you have.
What follows is the part you can price today, then the things that genuinely move the build fee, then the questions worth asking before you sign anything.
These are the line items every online store pays whether or not it sells anything. Every figure below comes from the vendor’s own published pricing.
Shopify publishes its UK pricing, so this is arithmetic rather than opinion. Prices checked 17 August 2026.
| Plan | Billed monthly | Billed annually | Online card rate | Third-party gateway fee |
|---|---|---|---|---|
| Basic | £25/mo | £19/mo | 2% + 25p | 2% |
| Grow | £65/mo | £49/mo | 1.7% + 25p | 1% |
| Advanced | £344/mo | £259/mo | 1.5% + 25p | 0.6% |
| Plus | From £1,800/mo | Not published | Negotiated | 0.2% |
The subscription is the number everyone compares. The card rate is the number that decides the bill. Because the higher plans buy a lower rate, there is a volume at which the more expensive plan is the cheaper one, and you can find it exactly.
Take a store with a £45 average order value, paying annually, using Shopify Payments so the third-party gateway fee does not apply. Basic costs £228 a year and £1.15 an order (2% of £45, plus 25p). Grow costs £588 a year and £1.015 an order. Grow is £360 more in subscription and saves 13.5p an order, so it pays for itself at 2,667 orders a year.
That is about 222 orders a month. Below it, stay on Basic. Above it, moving to Grow lowers your total bill even though the subscription trebles. Redo the sum with your own average order value, because the saving per order scales with it: at a £150 average order value the crossover falls to roughly 79 orders a month.
Two stores that look similar can be a factor of ten apart in build cost, and it is rarely the visual design that separates them. In rough order of impact:
We build ecommerce sites in Birmingham for clients in the UK and abroad, on Shopify and WooCommerce, and we quote a fixed price for a defined scope. If your buyers are other businesses, the platform question changes shape before the price does. Site speed is part of the brief rather than a later fix, because Google’s own thresholds treat it as a ranking input and because a slow store loses the sale before the price is even seen.
This is what we do. Ecommerce web development
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