There's two options I can think of with that XFi. 1. the guy at the used lot googled XFi and figured that he should try to get a lot of money for it. 2. Most small dealerships that buy trade ins from bigger franchise dealerships buy packages. As in, the big dealership has 5 trade ins they want to get rid of, and the guy at the smaller dealership has to buy all 5 to get the 2 he really wants. If you are lucky, that XFi is a part of a package deal, and the price is pretty much just an uninformed guess on behalf of the seller. It's not a lost cause yet lol