Well I have one, 9800 BFG GX2
I like the card, its crazy fast, its just so freakin hot. It is relativly new, about 5 months old, regestered with BFG etc.
I'll let it go for $300.
9800 GX2 1GB PCIE CH
Model: 9800 GX2 1GB PCIE CH
Serial Number: 0061308057984
Purchase Date: 01/29/2009
Purchase Place: NEWEGG.COM