What factors go into determining an escort's rate?

Rates are determined by area (NYC is way more expensive than, say, Richmond), fame (an established, well-reviewed escort can charge more than an unknown), looks, race to some extent, demeanor, and limits. I'm never going to be one of the $1000 an hour escorts because I don't act in a way that would let me fit in around high-powered politicians or celebrities, I don't do condomless blowjobs, I'm not famous (although I have excellent reviews, I'm not a porn star or a big name), and I don't live in an area where CEOs and celebrities hang out.