take in the car, along with kelly blue book printouts of the vehicles worrth on a trade in from
www.kbb.com -
first thing i would do, is call around, or drive around, if yuo are looking for a toyota (lets say) call the different local dealerships and see what you can get for your explorer. Also call the little out of the way places and ask them if they buy vehicles, most will, and see where you can get the most money for your car. That way, you can also go to the dealership you know is going to work with you the best.