Hi ppl.

Besides investment costs and electricity costs to calculate ROI, are there other costs?
Does the antminer S9 have substantial cooling costs?

The S9 antimer costs around 1089 USD, power supply at 105 USD.

I use cryptocompare calculator (link below) and it seems even at  USD 0.12 cents, that gives 169 USD per month profit.

https://www.cryptocompare.com/mining/calculator/btc?HashingPower=14&HashingUnit=TH%2Fs&PowerConsumption=1372&CostPerkWh=0.12

If minus pool fees, will get money back around say 10 months? Did i miss anything else.

My electricity costs would be around 0.09-0.12 usd cents, and i have to pay rent on a small place away from my home. Feasible, u guys think?
Comments appreciated.