I'm not sure. I bought a new bumper before I checked to see if it was fixable. Then, after looking for a place to paint the new one, I found a place that said they could fix the old one. I can't remember how much they said they charged (this was last april). I knew I should have just gotten it repaired and held on to it like that and sell it for 100 bucks more. I think you'll be able to see what kindof work it would take when I get a good pic of it. I don't want much for it, based on what it costs to fix, I would let it go for damn near shipping.
Here is an old pic of it.
It's kindof creased from the inside pushing out where you can see the faint line. And two little dots toward the right side of the bumper. I would think the repair shop would sand it down and then primer over it. Not sure how they go about repairing it.