Yes the costs are horrific.
£14-16 for one go in a maze is gobsmacking. And certainly, neither Compound or Mine Tours are worth anywhere near that price. All that does for me is make Thorpe's maze seem good value in comparison (though, I stress, I believe £10 is also too much).
But then again, I guess people pay those prices. The whole cost vs demand thing probably plays a part in their logic, so there we go.
Personally, I still feel £5-8 is what these mazes are 'worth', in the sense that of that's the quality they provide in comparison to what's out there (both in terms of other theme parks, and scream parks). But maybe that's just unrealistic of me.
I wonder if the increase in prices is directly linked to using RWS and needing to generate more money so all parties get money. Again, thinking in terms of Fright Nights, we might need to brace ourselves...