if you have free power and nobody has to listen it's awesome.
Even with free power you still have the cost of the money you put in place and your time along with any import fees and rental costs.
As a space heater then it works well at 9500 USD/BTC getting you a small profit of 0.04BTC over the course of 1.5 years of babysitting.
An
estimated 0.04
BTC over 1.5 years. Damn near nowhere certain.
Also out of curiosity because it's very difficult to read that spreadsheet, does that include the large chunk of money you'll get back when you go to sell and upgrade miners in the future or are you just for some reason assuming that it will be a piece of metal to throw in the garbage?
Great question.
Unfortunately I have not had a request for this. However I can add it.
Like selling and keeping your overhead low and perhaps using these as heating sources in place of conventional heaters.
The reality is you can depreciate the asset over time to get tax savings.
I don't know how accurate it would be because god knows what will happen a few years from now, but you could use the time since the S7 has been released and the percentage that its retail price on Bitmain vs. it's resale price on eBay has declined over that time span and factor that in. It's a lot of money that a lot of people don't consider when they calculate ROI.
S7 still selling for around 700$
In a country like Venezuela electricity is free, a s7 makes more than 100$ a month thats A LOT OF MONEY over there, minimum monthly wage is 5$ believe it or not. So yeah, there is still a market for old miners in some countries. I think in some UAE countries electricity is also free, but i doubt they see it as a business oportunity those guys are swiming in money