They think they're going to uncover a hidden gem, they're poverty club members who are going in for the price.
I've mentioned this before but one lady I used to see had a theory that the reason why a lot of guys go to see SPs working out of sketchy areas is they're thrill seekers. They like that there's the element of risk involved in going to see those ladies. Leolist lets them find escorts working out of sketchbag locations.