Is it possible that price GPU increase by 200% more in coming year 2022? What if ETH mining maintain a fair gains like 30MH doing 1.5 to 2$? What do you think?
Depends upon scarcity if there are lots of them price will drop.
At 3 cents an mh a 30 mh card makes 90 cents a day. It may burn 3kwatts at 10 cents so 90-30 is 60 cents a day. Or 215 a year.
That is about the lowest that works.