I was in phoenix over the weekend and although I didn't stop, I craned my neck as I drove past the tent on loop 101. Saw the bronco sitting at the end of one of the rows as I did. It looked nice from 200 yds away, but I would have never guessed it would go for over 40 grand. Maybe I'll have to change gears with my build and try to make it look moderately nice....
I've attended Barrett Jackson a few times (mainly scoping it out to try to sell my old VW bug there, which I decided against), and while there are a lot of different levels of quality there, all it really takes to sell an average car for more than it's worth is a nice paint job and nice interior. There are a LOT of buyers there who either don't care, or don't know enough to actually check a vehicle over for flaws.