I was on a site once and said I had brought an awning but only pre booked the van, so needed to pay the extra. The owner said 'Its £5 a night', I said but its only a small one, so she said 'Oh okay £2 a night'
There's no real logic to any of it and one of the reasons we often stay at C&CC main sites (off season), they all pretty much have the same rules, all meet a certain standard and always clean. We also know the times we can arrive and leave are pretty similar. They do have issues but also lots of advantages, dogs are free, have dog poo bins, awning included. Each year they do discounts on grass pitches in the summer and for the sites that allow vans on the grass you can get decent prices
Someone was asking about CS sites for C&CC, we have satyed on a few, but because we need showers and toilets they tend to be larger sites and cost similar money, I think the last one we went to we got £1.20 off a night because we were members. There are the smaller sites without facilities that are cheaper £10/15 but you have to ring them to book, can't do it online and because we plan in advance and only stay 1-2 nights we've never bothered with them.
We're just back from 15 nights in Scotland, average cost per night was £32.16 (no awning, 2 people, 1 dog, mostly hardstanding), only one site we didnt have hook up. Last summer we did wales for 2 weeks and that averaged £25 a night (mostly no ehu and grass). We're away in the van about 40 nights a year if we're lucky so ist now probably costs us £1200-1400 a year. Compared to the cost of the van, cost of bricks and mortar accomodation and foreign holidays, I think its reasonable price. Saying that, the avaibility of service points in Scotland and the amount of park ups does mean in the future I can see us doing a bit of that and campsites, but only north of the border in the right places