Guarantee Citylink

Hello ,help please.
I bought a graphics card 3 years ago, ASUS Radeon R9 270X, 4Gb GDDR5, Ret [r9270x-dc2-4gd5],
but 10 days before the combustion of the assurances I gave her, because the slow beginning . Well they checked everything and said I could only return the money, and replace it can not because no longer produced. And General question, can I now buy for 9K that is approximately the same power?