My favorite is the WE WANT YOUR CAR and we'll pay you more than it is worth scam. It's just to get you in the door. Keep the shiny advert around in case you get the itch to trade up, but highlight the MSRP and know that you're price will be more.

If I didn't have the issues with my '03 I'd be paid off by now, but I sure like the extra ponies and the locker.