"(j) REFUNDS. Any refunds due to Buyer will be made in United States Dollars, and for the purposes of calculating refunds, amounts paid in Bitcoin or other virtual currencies will be deemed paid in United States Dollars at the exchange rate given by Hashfast to its customers on the order date. Refunds for partial order cancelations or returns will be adjusted for any discounts previously given to Buyer for volume purchases."
Was this always there?
Of course not. The TOS for the first week of ordering or so were very different than they are now. Unfortunately, no one seems to remember exactly what they were :-/.
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
This is the ToS I agreed to and will hold HF to. Since they frequently changed the ToS and often without notifying customers or changing the revision number and date it is up to each customer to figure out exactly what they agreed to at the date they made the sale.
Has anyone tried going through arbitration with them? If not, I might try it out.