I literally just had something similar happen to me, a guy in a truck, merged into me, and he had extended lugs which drilled into the side of my car
All told, they had to replace a rear quarter panel, the side skirt, door (i had same issue, was just the outside part of door nothing internal was damaged). Also had to replace some Evo-R cf things, and a side mirror and two tires and one rim.
That came down to $6500 so you could subtract the tires, $400, rim $370 and some other ****. Then probly take off a grand or two since they pay inflated prices (They were gonna pay $700 for the oem side skirt and then $ for paint)