There is a complete continuum of course. On tinder and Grindr I have seen everything from the completely free once-only hookup, to the $350 an hour guy.
And in between, you have the guy that hope for generosity, but is fine anyway even if you are not generous, the guys who just want a little present from time to time (just like you would give to a boyfriend), the gold digger who hopes to marry a rich old guy, the guy who only does it if you are generous, but still enjoys doing it, the guy who can act well, but only does it for the money and doesn’t actually enjoy, the guy that doesn’t consider himself an escort but ask for the same price as an escort, and the guy that does consider himself an escort, but charge only half the usual price of an escort. And also there is the one who genuinely falls in love with you.