I (gladly) traded in an '07 FKC on a new '11 Tacoma, at Performance Toyota in KC, Kansas. One of the dealerships I laughed at in Central Texas told me, after finding out that I was driving up there for the trade, that the "numbers would probably change" when I got there. I told him that would be on me, and I would walk out on the spot.
A couple of weeks after the deal, the same guy emailed to see if I was still in the market. My reply was simply a picture of the paper tag, with the Performanance Toyota plate frame.