THIS: I personally will NOT accept delivery past december 31.. and will ask for my 210btc's back at Jan 01, 2014 0001H
So what will you do when instead they give you USD back at the BTC exchange rate (settled in USD) during the time of the purchase?
This issue has been beat to death.... if paid directly to HF wallet for batch 1 customers.. refunds are in btc. I would not have ordered from them if this was not the case.. i learned all too well from the june2012 BFL order.. (or maybe i didn't learn so well

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And if BTC drops to $20 at the time of your refund, will you still only accept BTC? It seems that no one ver considers this possibility.

Yes, I would be totally fine with that. I paid with BTC and I got my BTC back. It would have been the same as just keeping my btc which is what I should have done instead of buying my FailFast miner.
Ah such a bitcoin purist! But it's easy to take that stance when BTC is hovering around $700.

Not that I wish a collapse on anyone, it would be very interesting to see how the masses would react to a BTC refund at such low exchange rates. If you think HashFast hate is extreme now, I'm willing to wager that this would not even come close to the violent rage that would result from $20 BTC refunds.