Not all Diamonds are worth the money
A friend has had a couple of dances with "Diamond" (20-something dark / long-haird pretty dancer at WZ) in the past month+. Says she's generally one of the best looking dancers anytime he's gone (WZ has some women dancing who shouldn't be dancing, but she's not one of them). First dance it was the standard fee (40 for room, 10 for the naked room, 100 to dancer) for BJ then it quickly became +20 for BB, then another 20 for CIM. He tried to get her to slow down a couple of times but she finished him off in maybe 5 minutes, gave excuse "next time I'll go slower" etc. 2nd time same rate, after about 5 m in booth they called her name over the intercom to go onstage and she quickly finished him off with HJ then made excuses "I heard my name, didn't know why they were calling me. I didn't want them to catch us and have us get in trouble" etc. So. He said she's pretty, and really skilled at what she does, but part of what she does is not deliver what she promised and then make excuses so he's done with her.
Maybe negotiate beforehand and pay at the end would work, but I doubt she'd agree to it. Might be worth a try though if she's as pretty and talented as my friend says.