For me to pay, they'd really need to step it up a level.
I'm talking NUMEROUS trails (5 or 6+), minimal f*****g forest road and a decent cafe. No way would I pay for a non choice of a single trail (cwmcarn, betws etc). Bike wash should then be included and Glyncorrwg type facilities (minus thieves obv). I'm not against paying at all but I wouldnt pay to ride Glyngorrwg; 2 trails, one is a LOT of forest road and the chance my bike would be nicked but I really like the drop off and skyline cycles is brilliant. I'd be happy to throw a tenner at them for a day on some really good trails.