evga gq

Hello everyone, I was on Kijiji the other day and I found this guy selling a EVGA 650 GQ, and a EVGA 650 BQ. Each for $50 Canadian Dollars. I was gonna return my DA500 from Deepcool because it's bad and switch it to a CX550M from Corsair ($70). The guy said he used if for mining (4 Months only)...