Profit yearly: +325.38 USD
Approximate ROI: 449 Days
The problem with these estimates is that the calculators do not take into account the astronomical rise in mining difficulty we are likely to see. Be careful before dropping money into new hardware if you cannot afford to lose the investment.
Yes I have taken that in consideration too, what this calculators do is they take the last day, last week, and the last month, to compute the estimates.