I had 70 gpus running for a while, profits are good still to this date, i did sold my gpus tho because i made really good money on hardware itself. U also need to know that this is not something you will cover the investment in 2 months, if you can cover the investment in 12 months with todays earnings you should be happy. Also eth is planning to move to proof of stake soon ( they telling this for years now they allways keep delaying it ) so you also need to consider that eth wont be mineable in near future, but yea there is plenty of other coins you can mine.