Need to upgrade my video card but it can wait a bit if it's more prudent. Looking around the $200-$300 range, probably a GTX 760 or 770. What's confusing me is, as near as I can tell, the 760s cost about what they did when they came out almost a year ago. How does that even work? Is there a risk that I buy one now, and a month down the road something way better plops right into that price range and suddenly the card I spent 250 on is selling for 100? I guess the question is, is there a way to "time" this sort of thing so you get the best possible card at the best possible time/price or is that futile?