Can someone comment on how we can compare Mining vs Buying a cryptocurrency?

I understand it is the same difference between a Manufacturing profit vs Trading profit.

But I am not able to build an argument on how Mining is more profitable or more better than Buying a coin directly in the market.

Also can somebody explain all the different types of Mining algorithms used in the coins and the different types of equipment required for these types?

Can anyone give an approximate calculation of the expenditure on prodding one bitcoin at the current scenario?

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How to setup a gateway in INDIA?

Presently, the government of India has left us nowhere to identify the legal status of Bitcoins to promote acceptance of the technology. So people please (especially merchants) help understanding the benefits of the tech and raise voice  : https://secure.avaaz.org/en/petition/Reserve_Bank_of_India_Legalize_the_use_of_Bitcoin_as_a_mode_of_payment_or_currency_platform/