How did you do compared to what KBB said?
I don't remember what KBB said but my Isuzu Rodeo was paid off (I think we had a 5 year loan) so the car was maybe about 6 years old and I got $5000 for it. I think it was right up there with KBB. The thing is that its no hassle and very easy. I didn't have to worry about how long it was going to take to sell. I just rented a car for my last weekend, picked it up and took my car to carmax and whala.
BTW -- this is the third car I've sold to Carmax.