$500 to spend. Should I mine or Buy Raven at $0.07

Let's say I have $500 tp spare of a RX6600 . I think buying raven coin direct from exchange only cost me about 40% more then mining it ?

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Cost of RX6600 – 500.00 / $0.50 Make $RVN ( 12 $Rvn Day )

Or

Buy 500.00 / 0.07 / = 7142 raven

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Which would you do