By accepting arbitration, I believe you accept those Terms of Sale as valid and enforceable. Hashfast had absolutely no Terms of Sale a buyer could read back in August when I purchased. I remember looking everywhere for them. None Existed.

I saved a copy on day 1 (August 8 ) and emailed it to myself so it is time stamped by gmail. I've also uploaded it to pastebin in September here: http://pastebin.com/EfS9vmRf