Yeah I'd say $140 is a no go for me personally. It's a three year old card. Multiply that by wear and tear. Especially with sub $200 cards a lot of people probably don't ventilate them properly because they're building cheap builds like yourself and skip fans. Thing could last five years at 95%-85% what it was, six months at 50%, or stop dead in a week. Too much money for the gamble.
The best thing to do would be to shop around if you can wait. I'm not that familiar with graphics cards in that price range so I can't suggest a better one. For one-forty you should be getting quite a bit more on a used graphics card though. Maybe ask on the graphics card section of the forums "best used ~140 GPU?" or something.
Maybe you omitted it purposely but don't forget the OS.