im used 10x gtx 1080ti produce 56usd per day
And how much your capital investment for 10 GTX 1080ti ?
Hahaha.
Lets do the math
10=7000
If purchased summer of 2017
365 x 56 = 20000
Power is 5 a day 1800
So
20000- 8800 =
11200
Minus two mobos ram psus
Looks like he made over 10000 if purchase was summer 2017
Lower it to 4000 if purchase was nov 1
And resale is. 4000 easy. So. 14000 if July 15
Or 8000 if nov 1
Profit is 7000 + 1800 = 8800