In the UK we have mobile 'Bumper' (fender) repair franchises. Can't think of a name at the moment but they are quite reasonably priced.

The Bike version was Bike Medic, I think it ran for a couple of years then went under but it left a lot of guys with the skills and equipment to do lots of plastic repairs. - CHIPS AWAY - that's the car version.

http://www.carmedic.ltd.uk/franchise/bike-medic.asp

My son was thinking of taking it up but he wasn't convinced he'd get the work. We went to a demo and saw a plastic weld, sand down and paint matching (the most difficult part) they did that by eye. Might be one in the US ? much cheaper than a new fender.

If you do it today you MIGHT regret it. If you CAN'T do it tomorrow you WILL regret it.