You ask three agencies for a quote on the same website and get back £3,500, £9,000 and £18,000. The natural reaction is to assume the first is a bargain and the last is a rip-off. Almost always, you would be wrong. The three numbers are not three prices for the same thing — they are three different definitions of what "a website" means, and the gap between them is mostly scope you cannot see from the headline figure.
Comparing web design quotes properly is a skill, and it is the single most valuable hour you can spend before committing. The goal is to get all three proposals onto the same footing so that, when you do compare price, you are comparing like for like.
Read the scope before the price
Train yourself to skip past the total and read the deliverables first. A proper proposal spells out exactly what you are getting: how many pages, which features, who writes the content, whether images are included, what happens after launch. A one-line quote that just says "new website — £4,000" is not a proposal, it is a placeholder, and it will grow.
The reason cheap quotes are cheap is rarely efficiency. It is omission. Read our breakdown of what is actually included in a website quote alongside each proposal and tick off what is present and what is missing.
The things most often left out
When you put two quotes side by side, the differences usually live in these areas. Check each one explicitly:
- Content — who writes the words? Professional copywriting is a real cost; "client to supply content" quietly hands you a major job.
- Imagery — are photos, illustrations or stock licences included, or will you be sourcing them?
- SEO setup — basic technical SEO and analytics, or just a site that looks nice and ranks nowhere?
- Training and handover — will you be shown how to update the site, and do you get the logins?
- Hosting and domains — included for a year, or your responsibility from day one?
- Post-launch support — how long is the bug-fix window, and what does ongoing support cost?
- Third-party costs — premium plugins, themes, fonts or licences that recur annually.
Normalise the quotes onto one page
The practical trick is to build a simple comparison table with every line item down the side and the three agencies across the top. Mark each cell included, excluded or extra. Suddenly the £3,500 quote reveals five "extras" that the £9,000 quote bundled in, and the apparent bargain evaporates.
| Line item | Agency A (£3,500) | Agency B (£9,000) | Agency C (£18,000) |
|---|---|---|---|
| Pages | 5 | 12 | 20 + custom |
| Content writing | Excluded | Included | Included |
| SEO setup | Extra | Included | Included |
| Support window | None | 3 months | 12 months |
| Hosting (yr 1) | Excluded | Included | Included |
This is illustrative, but the pattern is real: once you add the excluded items back in, the cheapest quote frequently lands within striking distance of the others — and sometimes overtakes them.
Judge the quality of the thinking
Price and scope are only half the picture. A good proposal also shows you how the agency thinks. Does it demonstrate that they understood your business and your goals, or is it a generic template with your name pasted in? Does it explain the approach, the timeline and the assumptions, or just present a number? An agency that has clearly thought about your specific project is far more likely to deliver something that fits.
Watch the assumptions
Buried in good proposals is a list of assumptions — "client to provide content by week two", "based on a standard platform", "excludes data migration". These are where projects derail. Read them, because every assumption is a place the price can move if reality differs.
Don't ignore the soft signals
How an agency handles the proposal stage predicts how they will handle the project. Did they respond promptly, ask sensible questions, and present clearly? Or was the document late, riddled with typos and full of jargon? The proposal is the most polished work you will see from them, so treat its quality as a sample of what is to come.
Ask what breaks the price
Before you decide, ask each agency directly what would push the cost beyond the quote — late content, messier data than expected, an extra round of revisions. The answer reveals how they handle change commercially and whether their rate for extras is fair. An agency that has thought it through gives you a clear figure; one that brushes the question aside is leaving itself room to surprise you with an invoice once the work is underway.
Making the decision
Once the scopes are normalised, you are finally comparing genuine value rather than headline numbers. Often the middle quote wins — enough scope to do the job properly, without the premium of the largest agency. But let the comparison, not the instinct to save money, make the call. When you are gathering quotes, start from a fair shortlist of vetted UK web design agencies so you are comparing credible suppliers rather than gambling on whoever quoted lowest.