TBH I suggest you sign up for a month, message some guys, and get a feel for it. Be careful and watch out for scams, and don't directly discuss specific amounts of money or transactional sex on the site. I keep all my photos private, message them to get a vague/gut feeling for what sort of arrangement they're looking for, and then if it sounds like a match I'll share my photos and either my snapchat account, a google voice number, or my real number depending on how confident I am that they're legit. Then off-site I talk specifics + expectations.