I can't seem to PM you. I don't know if this forum supports that? Sorry for being new.
Anyways, I saw your post in the F@H thread (Really sorry about your mom and dad. That's why I fold too.) and I do have a PNY XLR8 770. I'm not really sure on the price, but I think I could manage a good deal. Another place I recommend is ebay. I know it is ebay, but I've seen some of the top end GTX 680s going for ~$250 there.