I bought this 2017 Model S 75D at a extremely good price this morning, I negotiated over $6K off what a similar car would go for so I felt fine about living with the issues if necessary. The main repair concern I have is a gash for lack of better terms to the liftgate from the previous owner striking a metal mailbox. Obviously there is a dent and paint penetration at the point of impact. How much does a repair for this sort of thing cost?