Carefully consider any "super deals" you may get. A batch of poorly manufactured motors, in which the oil pump feeds were not aligned correctly, ran normally for a few thousand miles before developing problems with oil pressure and noise. There were a lot of short blocks at dealerships, and LR removed the motor and replaced them (the only appropriate repair).
If someone boasts, "I got a sweet deal here, low mileage v8," you should advise them to inspect the bearings and front cover to ensure the pump holes are aligned before you lift the pan.