£100 website vs £2,500 agency website: what you actually get

Here's an experiment you can run yourself in ten minutes. Google "web designer" plus your town. Open the first ten results. Now try to find a price on any of them. When we did this for towns across Oxfordshire, almost nobody ranking on page one publishes a single number. "Packages to suit all levels of business." "Get in touch for a quote." Everyone wants your budget before they'll show you theirs.

I charge £100 for a website build, and I put that on my homepage. This post is the comparison the rest of the industry doesn't want written down: what a £100 coded build gets you, what a typical £2,500 agency build gets you, where the extra £2,400 actually goes, and, because I'd rather be honest than clever, the situations where the agency really is the right call.

01Where the £2,400 difference actually goes

Start with the uncomfortable arithmetic. A web design agency has an office, account managers, salespeople, project managers and payroll. Those costs don't build your website; they exist so the agency can exist. Industry surveys put UK agency small-business builds at £2,500 to £10,000, and when you break the invoice down it's mostly meetings: a discovery workshop, a proposal deck, two rounds of amends through an account manager who passes notes to a designer you never meet.

The build underneath is very often a WordPress theme with a page builder on top. That's not a scandal, it's just what's economical at agency margins. But it means a chunk of your £2,500 buys the same template infrastructure a £30/month DIY builder gives you, dressed in a better process.

A solo coder charging £100 can do that because the overheads are a desk and a laptop. Same HTML reaches your customer's phone either way. The price tells you about the seller's cost base, not about the quality of what lands in your customer's browser.

02The line-by-line comparison

Here's the honest table. The right column is a typical agency small-business package, not a caricature; plenty of agencies do good work at this spec.

Two of those rows matter more than all the others put together: speed and ongoing cost. Speed, because Google measures it and customers bounce from slow sites, whatever they cost. Ongoing cost, because £150/month maintenance is £1,800 a year, every year, and it's where the industry quietly makes its real money.

03The five-year bill nobody shows you

Build price is the number everyone argues about, but the running cost is the number that actually empties your account. Over five years:

• £100 build + £20/month: £1,300 total. Hosting, domain, SSL, unlimited updates included.
• £2,500 build + £100/month care plan: £8,500 total, before any "out of scope" change requests.
• DIY builder at £30/month: £1,800 total, plus your evenings, and you never own a site you can move.

That last point deserves a sentence on its own: with a rented site builder, the day you stop paying is the day your website stops existing. A coded site on your own domain is an asset. A subscription site is a lease.

04When the agency genuinely wins

If this post only sold you my option it would be an advert, so here's the other side. Pay the agency money when:

• You're selling online at scale. Real e-commerce, with stock syncing, payment edge cases, returns flows and VAT handling, is a team sport. That's £5,000+ territory and worth it.
• You need deep integrations. CRM pipelines, booking engines tied into staff rotas, member portals, multi-language content. Complexity is the honest reason prices climb.
• You're a bigger organisation. If five stakeholders need managing and someone must own the Gantt chart, an account manager stops being overhead and starts being the product.

But if you're a builder, plumber, therapist, salon or café whose website has one job, be found on Google and turn visitors into calls, then the extra £2,400 buys process, not outcomes. I've written before about what small business websites really cost in the UK and how DIY builders compare to coded sites if you want the deeper numbers.

05How to judge any website quote, including mine

Strip the price off and test the product. Every claim a web designer makes is checkable in five minutes:

• Speed: run their own website through Google's PageSpeed Insights. If their site is slow, yours will be slower. (We ran this test on every web design agency ranking in Oxfordshire; the results were genuinely eye-opening, and we published all of them in our Oxfordshire Web Design Speed Report.)
• Proof: ask for three live client sites and check them on your phone, not in a portfolio screenshot.
• Transparency: if you can't find a price anywhere, ask yourself why the number depends on who's asking.
• Risk: who carries it? A deposit up front puts it on you. A free preview puts it on the designer.