Very interesting, and supported by our experience. A couple of years ago, we had an agreement in place with a dealer to buy our '07 pending an inspection by our mechanic. He forgot to check the 4WD but we did and it wouldn't engage. The sales manager at the dealer got this sick look on his face when I told him. After he left to take the truck back to their service people, the salesman said, "A lot of them are like that and we send 'em straight to auction because it costs so much to fix."
The sales manager called later and offered a couple of choices. They would cancel the deal or we could buy it and they would eat 75% of the repair. We took the second option, so they added 25% of the dealer cost of the repair (a bit under $400) to the sales price. I'm sure some wouldn't have taken that deal, but we thought it was fair given that the truck was otherwise pristine, we loved it, had spent over a year looking for one like it, and the price was more than fair to begin with. Looking back, it was 100% the right call.