https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=780+-ti&_sacat=0&LH_TitleDesc=0&rt=nc&_odkw=780ti+-ti&_osacat=0&LH_Complete=1&LH_Sold

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=780+-ti&_sacat=0&LH_TitleDesc=0&rt=nc&_odkw=780ti+-ti&_osacat=0&LH_Complete=1&LH_Sold=1 https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m... Looks like you can fetch $120 for a working one.