Vintage Paw
dead stare and computer glare
(with apologies to pseudopsycho)
Now is a bad time to buy a graphics card. Both Red and Green teams will be releasing their new architectures this year, which (finally) will be built on a smaller fabrication process. This will probably mean a doubling of effective graphics power at the same price point/power draw, compared to the current generation. There hasn't been a leap like this in a long long time. Worth waiting for.
With hindsight, I'm still glad I bought my 980Ti when I did (a month or two before you wrote this). It's still going strong (as you'd expect), and I was never going to buy one of the founders cards. I do intend to go for the 1080Ti at some point, maybe towards the end of the year.
The only wrong time to buy is when you can't afford it and/or it doesn't meet your needs.