Was only a matter of time before this happened. It's not difficult to do, the price they're charging is crazy, and the rear "vendors" probably involve lots of bondo-ing.
If you're crazy enough to do this you can use all OEM parts. Fair enough, it would cost you almost as much as a new car when all's said and done with paint and refitting and modifications but hey - if you're gonna do it, do it right damnit.