Its not a fantasy to the whore. She is there at work, and the only thing she needs to work is a hole. Once she gets the cash, she has a pimp or rape card to fall back on if the guy is too forceful demanding his $$ back because of smell, non/poor performance, whatever. 90% probably don't care about repeat clients, because they are one more trick/job/break away from getting things turned around and not having to fuck slobs for crack money.