I think it varies depending on where you are and time of year. I do all 3 of wild camping in a 1 man tent on my own, family holidays in a big tent and we also have a van. I paid £34 for a piece of grass in the Peak District over Easter weekend. Toilets and showers were gross and the field was on a hill so we to adjust the bed to be able to sleep. There was also lots of big groups of kids in Audi's smoking weed and blaring music.

We also had 2 nights in roadside park ups for free. Lots of peace and quiet with beautiful views and loads of great walks. On both nights no one (other than other vanlifers) knew we were there and me and another van walked around with a bin bag and cleaned up litter from people who had parked up for the day to go walking.

The hot spots will always charge high because they know that's where people are going for long weekends or holidays and £120 quid is still cheaper than a hotel, but there are plenty of basic campsites out there still charging £10/15 a night for a bit of grass for a tent.

We go away each year to a lovely campsite in Pembrokeshire which is £55 a night. Tbf we get a private secluded pitch, which is fenced off from other pitches (great for my reactive dog) and have our own personal shower, compost loo, picnic bench, sheltered kitchen table and fire pit. It's expensive but worth it for all the luxury on a campsite with sea views that has still retained it's wilderness. Our regular pitch is surrounded by ferns with lots of birds and we often see owls out hunting in the evening. There's a massive bit of open land next to it with horses who often come and poke their heads over into our pitch. I'm fortunate that in exchange for me doing some drone footage for the campsite they knock 3 nights off the cost of our 9 days away.

The same campsite though is situated on the coastal path and they have an open patch (without all the luxuries) where hikers can pitch their tent for 1 night maximum at £10.