IME and IMHO one of the keys to getting into a girl's pants, at least more than once, is understanding what her motivations and needs are.
With a civilian girl it can be anywhere on the map, mixing in a combination of physical attraction and whatever other emotional need she is trying to meet (not feeling lonely, overcoming rejection, wanting to feel wanted/valued, etc., etc.). Figuring it out is simply a function of listening and observing. And of course sometimes it's a girl who just wants to get laid, though IME it often ends up being more than that.
For an OTC stripper, the analysis is a lot clearer. Money is a key driver. But even then the extent to which other needs have to be met depends on whether she is fucking and sucking routinely and has accepted whatever label that may bring, in which case she doesn't generally need much of anything else, or if it's something she does more opportunistically. At the extreme end of the non-pro OTC strippers, IME you'll find a type of girl who definitely has minimum standards as to who she'll see OTC and who needs certain other things from the guy, like affirmation that she is not [insert label here] and that he finds her to be truly special.
As I have been finding out very quickly over these past few months, non-pro SBs are like extreme versions of non-pro OTC strippers, but often with a few additional civilian needs mixed in. They tend to have slightly higher physical standards than the non-pro OTC strippers and they often need even more affirmation and to feel more special. But beyond that, many of them need someone who listens to them and makes them feel validated as both good people and women. Basically it's like some blending of extreme non-pro OTC strippers with elements of civilian dating.
Now obviously these are blanket generalizations, but on the whole this is what I've been finding in the SB marketplace. I say this only to provide a bit more perspective for the guys here who haven't waded much in the SB marketplace. Once you learn to screen out the pros, scammers, fake accounts, etc., what you find are civilian girls, many of whom work normal days jobs and generally live normal lives, who are doing this to meet certain financial needs, but definitely don't view themselves as SWs and expect to be treated as well as any civilian date.