commissions

Which is a better brokerage plan - per trade or per crore ?

I took a dig and ICICIdirect's F&O and realized the HUGE cost of commissions at Rs 75 / Lot ( That is JUST COMMISSIONS ) other overheard yet to be accessed. So HOW can someone trade in options that are : <> Not expensive <> Whose Market lot # is less e.g. NIFTY when the commission catches...