how much is it to replace the hatch door and bumper on a 2018 VW GTI (1 Viewer)

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Im currently interested in purchasing a 2018 VW GTI but the hatch back door and bumper possibly the muffler would need to be replaced and i dont know how much that would cost and if it would be worth it to buy the car and replace those parts. The bumper and hatch door definitely need to be replaced and the  muffler i think just needs to be repaired.