This is a more plausible story. There is only one electricity bill for $ 2,500, so this is a whole crypto farm. I have no idea how much money should be spent on such equipment. I believed that they started mining on an old gaming computer.
Specialized mining through computers will always be very expensive, because the mining assembly already uses special equipment that can last a long time, so it is natural that the initial costs that must be incurred are very expensive as well.