Yeah--I didn't mean to imply that there was money changing hands, just that there is some "cost" inherent in the trade. F'rinstance, the dealer with the car you want might ask your dealer for a higher-margin vehicle in exchange--if he has to exchange, say, a truck he could sell for a $5K profit for a car that he's going to sell to you for a $3K profit, then that's probably not a deal he'd want to make.