Radeon X1900XT from Mac Pro for sale

I'm not going to need the Radeon anymore because I'll soon be going back to Windows land. Does $300 sound fair? It's only about 8 months old, in great condition... If someone has a Geforce 7300 they would like to trade, I would sell the Radeon for say $200. I would prefer a trade so I would not have to go find a 7300 somewhere else.