Need new videocard

Want to buy a new videocard to get the advantages with the Mercury engine.
But almost all the geforce video cards in the supported list is no longer available:
Mercury Playback Engine | Adobe Premiere Pro CS6 – Adobe.com

Are there other cards that work that are’nt to expensive?

via Video Editing Forums: Digital Director – Adobe Premiere, Premiere Elements, and After Effects http://www.videoforums.co.uk/adobe-premiere-premiere-elements-after-effects/42731-need-new-videocard.html