Hey there I would agree with the first poster, try selling it for 450-475 dollars. That would seem more reasonable since you did use it for a year, I would also recommend polishing up the case and cleaning out the dust prior to posting pictures, a cleaner computer would probably draw more people compared to a dusty computer with fingerprints all over it. I'm assuming that case does have a glossy exterior, which is why I recommend polishing it, if not then just clean it up a bit. Brett does speak the truth, I myself have tried selling video cards on my local classifieds website (kijiji) and boy do people lowball to the max even if I do post a good price such as $40 for a HD 5670 which I bought for around $90 dollars at the time. Despite the $40 dollar price people come to me asking for it for a mere $20 :lol:
Anyways I would try posting it on ebay, perhaps try a bid with the starting price at the least you will take it. I am confident someone will bid and then it will turn to a bid war until the very last second. Too bad I'm too young to sell on ebay.