Something to ponder.
30 months = 900 days x 2.30 usd a day = 1860 so if you need to use a space heater 24/7/365
it pays off in 30 months. if you need it ½ the year it takes 60 months.
not counting diff and coin price.
If your goal is to just make money, then there's plenty of altcoins to be mined with way lower difficulty (and payoff) than BTC.
It's a bit altcoin territory but you can always point your miner to cheaper coins that pay less for lower hashes, proportionally...
This would have been good gear if they released in in Dec 2019 they did not.
I do not understand why you woke the thread up ⬆️ to post your comments as they do not seem to belong.
I never saw any of these mining ⛏ anywhere on the net.