New development on this odd auction.
I wrote them and asked if they used their kit on the xfire. I sent them a picture to make sure we were talking about the same car.

this is the reply:

Yes, all products are test fitted before they are eligible to be marketed. I can sell the front bumper individually but it wont save you a whole lot. I charge $225 for a single bumper, but that price includes the shipping.

I'm going to write back and point out the head lights and tail pipes...