I had a gf who admitted that years before she met me when she was a college cheerleader, she had traded sex with the manager of a major chain garage to get almost a total overall of her car - new tires, complete new brakes, cooling system flush, replacement of coolant lines, new water pump, new battery, wipers, complete tune-up, replacement of all belts, everything! She left her car at the shop multiple times over the course of month or two during a summer. She would go home with the guy who took "a very long lunch break" lol. She claimed it started by accident when he hit on her when she brought her car for a repair. I suspect such things happen a lot more than we realize. She realized it probably took the month or so because that way the guy could write material off as lost/damaged/etc over an extended time (plus he got more sex), and use "manager discretion" for complimentary services to unhappy customers. She said he was not bad looking, probably an average guy, and she wasn't a virgin -- so why not.