First, they're a lot less big that I imagined them. I always represented the S7 as an ASIC with the shapes of a S4. Also, can you still do your gym in this piece ? Three pieces of such miners should produce an unsupportable noise.
Lol as is the case with most home-gyms I never use mine, I prefer to go to a public gym. The noise is deafening, but luckily the garage seperates the room from the rest of the house.
My electricity cost is R1.64 so about $0.11 per kwh but Bitcoin can be sold at at least a 10% premium over the international price in SA,, although this difference is dropping, a month ago there was a 15% premium
I doubt I will ever make lots of profit,, but it is fun