Last July some ding-a-ling dragged a white colored door across the front of the fender flair on the right-front quarter panel. It wasn't an accidental "door ding, Oops" - it was a "hit the leading edge of the fender, then pushing the door open across it". Other than the paint transfer, it looked like they took a hand-held wood file to the fender. It was beyond repair. I did not even contact my insurance company - I knew it would be a waste of my time.
I went to the original smart center Portland (where I bought the car. This is well after MB moved the dealership to MB of Portland, OR) and the service manager sourced a used right-front quarter panel in my car's color.
I wish I still had the paperwork on it for the price of the panel, but the total bill for the panel and labor to install it was $370.88 USD. Mind you, replacing a front quarter panel requires removing the front clip, replacing the panel, and reinstalling the front clip - which will run the labor cost up a bit.