It's never free.
For those of you that have ever dated or been in a relationship with a provider, you know damn well that the sex might seem free, but when you add up the hotel bills or cost of maintaining an apartment, the lunches and diners, vacations, day trips, shopping and beauty days and everything else involved, it's a lot cheaper just going to see them as a regular customer on the clock.
Unless the girl has plans of eventually retiring and you both plan on then having a monogamous relationship together, what's the point?
It's not like you have something special together that is exclusive. Everything you do intimate together, she's doing with 40, 50 or more guys a week.
Yeah, they are paying for it in the room, but you're paying a hell of a lot more maintaining the relationship in the long run.