the amd cards are all a bit overpriced due to the mining madness, that and the custom version 290/290x launched just recently. and since the amd's sell for more nvidia is raising prices too cuz... why not
this is actually a pretty bad time to buy graphics cards to be honest, at least high end graphics, thankfully the middle ground isn't that much affected.
edit: check out also the mantle reviews
(supported on amd cards http://hexus.net/tech/news/graphics/65549-battlefield-4-amd-mantle-update-released/)