I just bought an AMD 68 Dart rear bumper. It was $269 Delivered, off ebay.
I dont know how it compairs to one thats been rechromed by one of the high end shops cause I have not seen their work, but I am very happy with the look of the AMD bumper that I bought.
It looks 100% better than the 40 year old chrome that was on my original, and way cheaper than sending mine out to be rechromed.