Ouch!
Even as an…read moreAmerican where dollars were worth twice as much as Turkish lira, this was expensive. It was 50TL ($25) to even get in to use the beach and then each drink on top of that was what you would expect at a night club (at least $7 for a beer if I remember correctly).
Instead of coming here, I would definitely recommend checking out Bitez instead. It's closer to Bodrum (which is probably where you're starting out) and it's free to use the water. The water at Bitez isn't as nice as Xuma - Xuma's water is honestly amazing - but I just don't think it's worth getting to Xuma and paying what you have to pay.