Also I just bought this lol. For $265 on ebay so I will want to run it for a bit. My goal would be to mine enough to buy an S7 but that could take a while if ever.
maybe try relisting, maybe the person you beat in the auction will buy. see if you can get yourself 2 s5's would be more power efficient, which would allow greater profit thus a faster s7. im sure there are plenty on here people are selling.