but at current rate it will take approx 3 year to get roi ..

at current rate it show 22.80 USD per day for 30TH
Now maintenance fee will be for 30TH :- 18 USD

So you get around 4 USD per day

Cost for 30TH = 4800

To get just roi you need 3+ year ..so so at that time again next halving will come ..

So investing in sha256 is not worth right now