Women might fake one or two orgasms but not over three. If there is a change in wetness it's probably real. If she starts singing afterwards it's probably real. If she forgets to ask for the money it's probably real. Not at all.
Escorts have several advantages.
You don't have to talk anyone into it. When you're ready you can do it when you want. You don't have the overhead that a relationship comes with. You get someone who's experienced and a lot less inhibited. Many very successful men who can get sex for free still call escorts.