I've been following this thread with interest. About ten days ago I did this to a guys BMW, totally my fault. I managed to track him down by knocking on doors and we agreed not to go through insurance.
He rang me back tonight, £675 all in including new bumper, colour match respray, and fitment. I'm bunging some on top for him for his troubles and understanding nature, and he wants to buy me a pint next time he sees me, so I'm light of pocket but heavy on good karma.
Some of the figures on this thread seem a bit toppy to say the least!
That sounds remarkably cheap.
Started out with nothing. Still have most of it left.