Prices vary, check their website
I think it's 12.00 for one hour. No other costs, unless ypu go without socks, then must buy a pair.
Don't remember exactly but you have to reserv it for a minimum amount of kids. Every time we went there I ended up paying about $600 including food. And we had about 15 kids. Not cheap but hassle free.
Thanks! Your answer is awaiting moderation.