When I was in Amsterdam I was stoned out of my mind on space cake and sat on a bench near a window with a very large woman showing off her wares. I was amazed at the amount of business she was doing. She was doing as much business if not more than the model quality girls in the same area. I don't know if she was cheaper than the other girls or what but there was almost no down time during the 2 hours or so I was sitting there trying to remember how to get back to my hotel.