It's a normal thing for people to want to rationalize their experiences in this hobby. We all, once in a while, like to think that we're in control, that we can predict and avoid getting screwed. SP like to think they know their industry, but the fact is that they have a limited knowledge of one sub-section of the industry. Same thing for clients. There're no way of knowing the market share taken up by independent providers, and there's no way of knowing what happens behind closed doors. That's why it's so intoxicating: it's a little risky. When things work out and you're happy cause you got a little YMMV, you feel the extra kick because you know it could have broken differently. People who claim that a reputed high-end agency will protect its customers because of return business are making a prediction based on past results and a naive theory of business relationships. And we all know past results in the stock market are not indicative of future profit. XO or whatever are not Microsoft. They're not even patates frites La belle province.
This post started off with a guy asking for advice about how to deal with having been screwed by a SP. Most of us who don't spend 500$ a week on the hobby can relate to that. As some members mentioned, you have to simply file those crappy experiences under "experience earned" and carry on, knowing that in time your judgement improves and these things don't happen as often. Is it better to pay after the service ? Of course, but many reliable, sexy SP will not accept that, as well they shouldn't. IMHO, the burden is on the client: it's your job to do your homework and ask all your questions before you hand over the money. That's my one recommendation: go over all the details right before you fork over the money. Some other members mentioned it as well: if the girl doesn't ackowledge what you agreed upon, just leave. It takes a lot of practice not to give in to the provider when you're horny as hell and want a release. In the past I've felt that focusing on details would take away my chances of getting the special kind of YMMV that sweet respectful clients regularly get from sweet, honest and sexy providers. But remember how bad you feel after having been screwed the wrong way. There are plenty of straight shooters out there, even on the rebate sites.