I guess some dealers are getting desperate, if a Dealer charges only $ 500.00 I would have some sort of contract like..... if the car has paintwork, or any other abnormally you do not have to buy it.
I have bought several vehicles at Manheim for friends ( $ 0.00 charge ) and I have to tell you, all the pre -purchase work it is not worth it for $ 500.00, unless they just stand on the block and buy whatever comes through it.
I mean, dealers do not get the Unlimited CarFax or Autocheck, cost is anywhere between 5.50 and 10 per vehicle ( I run both as they do not show exactly the same info sometimes , like accident on one but not the other, possible rollback..etc ) let's say, you want a car with clean history, and there are 10 to choose from ( $ 155.00 ) then the trip to let say Manheim PA ( $ 80.00 fuel and meals ) then your time including running the reports, look at the cars thoroughly, maybe using the paint meter, etc.. lets say 12 hours ..at " slave rate " ( $ 180.00 )..so all that for a loss on a $ 25,000 vehicle...not so good