If you want it buy it, live for today and enjoy it. A faster card will always be on the horizon, we all know this.
Well im getting a AIB one, watercooled. Ive had my two watercooled 290x long enough. They cost me as a pair £550 second hand so £600 on a faster replacement seems like a fair price to me especially since they would have cost me £1100 if i had bought them new