Surprisingly, I have never refused. I’ve even paid more than my comfort zone, not because I was afraid to refuse but because I enter these places with a certain expectation. I do however have a limit to what I’ll pay but I like to think of myself like a responsible gambler. I pay to play with the expectation that I will spend no more than what I brought in and leave. Sometimes I’m happier than than others, and sometimes I thank the stars I got out alive, but each experience be it good or horribly bad teaches me a bit more about what I really want and where/how to find it.
Sorry, this doesn’t help to discourage the crappy providers but I assuredly make as many aware as I can to avoid those poor visits.