I checked local market, today there a alot of used s9 asics I can buy for about $60. Then I checked nicehash calculator.
With zero cist electricity you'll get $1 daily or about 2959 sats. After 60 days you'll mine the price of asic.
However there some drawbacks. I don't have zero cost electricity, transaction fee, I shoud live with heat and noise, this asic is used, etc
I'd rather use it as heater in greenhouse than use it as Bitcoin printer. In all other situation I'd buy $60 sats
Interesting, here the cost is $140 I think due to the demand that exists because there is interest for using S9 to mine BTC. If the calculations don't fail, then it's profitable
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What is the electricity cost?
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