Option Buying or Selling

Dear All

In Intraday option prices and IV vary drastically.

Other than IV which are the other parameters to decide whether to buy and option or to sell an option,especially in Intraday?

Some basics covered here,do not discuss more details.

http://ift.tt/2d6cH9N

http://ift.tt/2d6ccg5

Also any website where IV's of Nifty and Bank Nifty options where we can get Realtime IV's and other option greeks?

Any other website where we can get realtime option charts for both Indices?

Option Buying or Selling