@Ragman,
I just researched my numbers..so I was off-base a bit earlier with my off-the-cuff guesses on dealer's retail vs trade-in values.
According to current Kelly Blue Book values, an '08 BMW X6 would sell for $59,000 to $66,000 RETAIL, depending on 6 cyl or V- 8 engine options and equipment or if turbocharged.
ok...so, taking as an example, a sale at a dealer's used lot in a town in hypothetical So. Calif., for an 2008 BMW 8 X6, 6cyl, 35i 3.0 L Twin Turbo SUV 4D, with a typical 13k miles on the odometer, said retail would be $64, 825 with typical options. That, of course, assumes this car to be in excellent condition.
I understand the feeling of what it's like to have a gorgeous luxury car that you feel was 'violated". However, if the thought of taking this big loss $$$ return is that galling , I'd just keep the car.
This same vehicle in a trade-in from the dealer, would sell for $58,700.
however, the important facts here are that the car reflects an excellent conidtion. A car that has minor body work and still looks excellent and drives like a typical new used car of that vintage, should sell for a premium on the market.