I did mining with my personal computer with several pools and I noticed that I can invest in antminer s4 and that is quite interesting when I calculated the profit here : https://alloscomp.com/bitcoin/calculator
So my research says if I invest any amount in mining devices, I can return my investment in just 4 months. Am I calculating right? Is it that accurate?
I'm Planning to invest on antminer s4, Is there any better option, because right now bitmaintech guys selling 16 units for $14K and I can get 32TH/s with those. also I'm in Iran andd the electricity price is so cheap here, I can register a production company to cut half my electricity price even. But I dont know if they ship units to Iran and the weight is so high its about 250KG.
So what do you think about my plan?
Thank you
Everyone would advice not to get into mining at this stage, specially when the halving is expetd to happen in an year or 2, which is definitely not be profitable for minin.g