Apparently the 800 threshold has no baring judging by today. Possibly the red bold font was the fix required. From posts the S1 appears to be the current weapon of choice for the more pedestrian non-100 Th/s ruler of BTC types.
Well considering they are 1.45 BTC for the past month, make around 1-1.1 BTC a month currently. And you could buy one for $750 if you bought 1.45 BTC when it was around $500. They are a VERY good investment.
They were a good buy a week or so ago at 1.45. But that 1.45 was equivalent to a out 1000-1100. It might be 750 now but that is march delivery and toe jumps in difficulty. So that roi calculation could be off - and especially if btc to fiat keeps dropping.