Well-known miners have a cost of electricity of 2-4 cents, while circlehash has a cost of 20 cents.
1. Basic Cost Structure
Electricity costs refer to the expenses incurred from the consumption of electrical power to run mining machines.
At CircleHash, we operate with a standard electricity cost of $0.2 per kilowatt-hour (kW/h).
https://www.circlehash.com/page/electricity-costs
And at this price, mining is not profitable, but it is profitable to sell miners to beginners. Then newcomers will be told that mining is unprofitable and will be offered to send the purchased miner at a price that will be higher than the market price.