pal , even i dont like prepaid schemes, so as i've earlier mentioned, if you've good volumes, say daily volume more than 25 to 30 lakhs, u can ask for .001, as brokerage. they easily offer .015 paisa for fno/intraday for delivery it would be a bit higher.
Again pals, i am not anyway connected to angel. i am a independent chartered accountant and a full time trader, so please be a bit cautious and even make sure that u get a written commitment for brokerage with them.