I don't understand why you get upset because you can't sell your card for as much. If you couldn't afford the whole price, you shouldn't have bought it. The only thing that has happened is the market is getting very competitive and you are just another competitor. My gts has dropped to more than half of what I paid for it a little over a year ago, but still is fine to play any games that I throw at it. I'm not sour because I spent nearly 400 dollars for a card that has served me well just because the new gen cards beat it for half the price. That is just progress.
Bookmarks