We mostly use S9 and S17 Antminers, S19 are on the way.
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Our maintenance fee is already included in the contract price. The contract price stems from our possibility to set up the equipment and the electricity price.
Well, good to know, let's play with math.
1TH is 19$, as I said before, screw the GH..
An S9 burns 32kWh a day for 14.5 TH, that means 2,2 kwh a day for 1TH, 800Kwh a year, so you need to have to pay at most 2.3 cents per kWh to break even not even talking about ROI on the gear, breakdowns, maintenance, facility cooling, wages.
Assuming S19Pro, that's 0.7 kWh a day, 255 a year, allowing you to pay close to 7 cents, let's assume you have 3cents, meaning you're making a profit of 10$ per Th per year, and you would ROI your equipment in three years, assuming no difficulty increase no other costs no breakdowns and indeed flat price.
Also, it is part of our business model - providing people with accessible mining solutions.
Yawn! Yeah, the business that thinks only about the customer, who runs it, the Easter bunny?