I will say it once and I will even say it twice, the best value in video cards today is the AMD R9 280x, it trounces all of the cards listed here with a price under $200. I actually got mine for $175 with discounts. If you are hard up for money, you can buy a refurbished card from gpushack.com which comes with solid 2 year warranty.
hard to get hold of new now - if you can theyre overpriced.
second hand you really really have to watch out for ex bitcoin minig cards that havent been looked after well
Yes, I don't see why jeremymau is downvoting you for no reason. It is true, just look at all these 280X's on Amazon:
Most are about $240.