I did give a try with this Kotak plan but let me tell you they are cheats. They take advance amount & have pathetic accounting system. They did a double deduction from the account plus they kept charging extra for every single thing. I had to regularly track the charges in ledger & inspite of escalations they did not bother. Stay away from such brokers as they make money indirectly by way of cheating. Zerodha is the best platform in terms of pricing & technology (though sometimes you see some down times but thats still ok).
As brokerage cause a lot of dent on scalpers.
My view :
Brokerage is too less in comparison to STT and GST
It is of no use to shift Broker with Brokerage of Rs Nil from Current Broker of Brokerage of Rs 20 per transaction.