The extreme GPU shortage right now is Insane. Never seen anything like this.
While at first look 10 month ROI looks good, in my opinion, it is very risky. Profitability could be 10% of what it is now in 3 months then how long would it take to get your ROI? Look at what happened when new ASIC's or GPU's hit the market previously. If coin prices go up you will do good but it's very unpredictable.
It was the same as this last summer...
Profitability can also be 1000% of what it is now with coin price changes etc.
Case and point I sold a dude a miner that paid me in eth last year. He paid 38eth at that time it was 4K