Bail the F' out of BFL and buy other HW. They're charging 2$ per GH and you can get other stuff as low as $0.70 per GH.
Depends. I could sell you a Single/50 for $25 bucks. That would be .50 per gh, is it a good deal?How about ten bucks? .20 per gh. Super deal, right?
Answer: No because the unit pulls 200 watts to make 50gh. The number is power and price and gh performace.
C
The HW at $0.70 per GH is ~1W/GH. You can also get HW at $0.65 per GH that's at ~0.7W/GH.
But, I bet you knew that and just wanted to nit-pick
Anyways, while you're right in your little scenario evlew states:
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I have free power