Lucky for you I haven't sold my old card yet . I just replaced my EVGA 680 FTW+ with a 1080 a couple months ago. I haven't had any issues with my 1080 yet and was keeping it as a backup. It can still run most things on medium to high settings(mostly medium) and has had about 4 years of heavy use... If you want to cover the shipping, I'd be happy to send it your way.
P.S. It comes pre-installed with S-Bot material, use at your own risk