Is NiceHash Still Profitable with Radeon RX 580 ?

[cryptocoinplay]

Hello, I'm totally newbie about bitcoin or croypto mining. I just used NiceHash profitability calculator and found that its possible to make $4.43+ everyday with AMD RX 580 8GB .
But is this calculator really legit can how long this kind of GPU mining will be profitable. Is this good to Invest $400 for a GPU or leave it? I need expert ideas who are already with this kind of business.

For better understanding I have attached the picture below:



Now its about Investment as I don't have any hobby to play High-Reg games or etc to afford a GPU I can only purchase If I can Make Money with it. And Is it really legit to mine BTC's with GPU? How long it will go?[/b]

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[Velkro]

But is this calculator really legit can how long this kind of GPU mining will be profitable.

You can never be sure. I mean websites use self created algorithms that can or cannot workd properly.
Hash rate is needed/difficulty is hard to determine so whatever you decide to belive this calculator or not, good luck!