OP: dude. How about building a bit of trust simply. Vibing. Showing you're fun and not a serious threat. Whores aren't robots, but you almost sound like one (or a troll, but I'm new here and might not get a joke if it is one).

Seriously, the safer you make (any) woman feel the more of your outrageous desires/ demands they will be willing to go along with. Being too blunt too quickly, i.e. going into detail before building up a vibe for at least a few moments, usually doesn't accomplish that - in which case you'll be left with the kind of ladies that'll do anything if just the price is right, and you can usually discern those by the equipment dangling from their walls.