VM: "I hope the dances are good if you are required to prepay."
vince, do you refuse to pay for the first, and presumably only, dance if it turns out not to be "good" enough for you? If you don't refuse, I see no significant difference between pre-pay and post-pay in the scenario I related above. I've paid for one dance, and if I don't like it, I move on. You haven't paid for anything yet, but if you don't like it, you pay for it and move on. The net effect in both cases is the same. We're both out the cost of a dance we didn't like.
Now, where there is a difference is when you like it, you get to keep going without interruption, whereas I have to go buy more dances. This may be a consideration for some, but I have to admit, it isn't really any more for me. I haven't gotten off from simple grinding in so long that I can't even remember when it was. Before I got married, I know that. So lap dances aren't a vehicle for getting off, they are an opportunity to explore the attributes of a pretty girl on my lap, and hopefully arrange for something a little more intimate somewhere else.
This may be the reason the practice of pre-pay doesn't concern me overmuch, but it's also worth noting that I don't recall ever being in a club that did not require pre-pay for lap dances, and I've never been ripped off. It's also worth noting that, while my SC hobby spans 30 plus years, the number of clubs has actually been moderately limited. Buffalo NY, Niagara Falls ON, Jacksonville NC, Washington DC, Kansas City MO/KS, and Louisville. So maybe that limits my perspective.