I already bought it.
But I bought it mainly because of the claims the seller made when he stated that it was from an actually GT3. Honestly I didn't pay too much for it, but in some ways I regret it. Ready for the price? I paid $250 for it. I have a friend who works auto body repair; he's going to paint it for free. I just have to pay for the paint. The cost for the paint is yet to be determined, but I believe that it will be under $100 easy (I think he said around $40). So, for about $300 for a possible "fiberglass" bumper, I'm not too depressed.
Accepting the possible fact that this is fiberglass, I tried to find one on the net to determine its price. Unfortunately, I was unable to find a fiberglass GT3 bumper. Anyone know how much these things go for? I know the OEM goes for an avg of $1K.