...everywhere else that I am familiar, escort agencies advertise a rate and that includes fs. What you are describing sounds more like fbsm where there is a low fee like $180/hr to get her there for a rub and tug, then if want her naked, extra $50, if you want BJ extra $100, that sort of thing. There is no "typical fee" for a strip show and dance. In fact many girls dont even feel comfortable doing that, believe it or not. Old advice applies here. See highly reviewed women with many reviewers, who they themselves have reviewed many ladies and the chances you wil be disapointed drops substancially.

...where the preliminary fee just gets them to your room.  It includes no services and you have to negotiate all services and fees.  Not worth it.

And they know that you are horny and likely from out of town, so many will try to squeeze you for more money by saying, "What you paid was the fee to come over.  If you want to see me naked, it costs more."  Or something along those lines.

You are best off compiling a short list of TER-reviewed girls, and you should PM the reviewers to get more details.

A word of advice:  Always be very polite when PM-ing a reviewer.  You are asking for info, and likely providing very little of use in return.  For example, if you are contacting a reviewer in SLC, he might never come into your town, so any info you have on a girl who is local to you might be of no use to him.  I can't tell you how many PMs I get that make me scratch my head from guys who think that I owe them information we both are on TER.  A little politeness goes a long way, especially if you are gonna be getting info with nothing in return.