Steve it is probably a mistake/error.

I didn't realise they had to be perfect. Doesn't really matter.

I looked at your all in one page and it became a blur and things became indistinguishable. Much prefer the Sidmouth site itself.

I doubt people look at their budget and decide what to buy.

IMHO people decide whether they want to go for a week/day/weekend/camping etc.

Then they see how much that will cost them. By totting up on a piece of paper. Or in my case - mentally and approximately. Then they make adjustments.

Then they go to each part of the website.

I happen to think the "design" of your website is appalling. But I am far too polite to say so.