I don't know if this estimate helps, but after I was seriously rear-ended, a Toyota authorized body shop (the only authorized shop in our area) did work that came out to $9200. But all the replaced parts were OEM. This included both rear quarter panels, trunk lid, bumper, headlights and straightening out one or both rails, the entire floor of the car, exhaust, tailpipe, and probably more stuff I'm forgetting. But there was no battery damage.