1994 BMW 325 rear bumper repair

I recently was rear-ended. It pushed the rear bumper forward and slightly dented the corner of the trunk. The bumper pushed the wheel well close up next to the rear wheel on the passenger side and shifted the trunk slightly forward making the carpet in the back not fit. The car seems to be driving fine, the headlights are in tact. I drove it home from Seattle after and only noticed a slight increase of water splashes in the rear passenger side wheel from it being slightly compacted towards the rim (but not touching). About how much does it cost for the rear bumper and the cost for mechanic time? Thanks a bunch.