zerodha brokerage charges 2018:

Zerodha does not charge any brokerage for delivery-based equity transactions. It charges 0.01 percent, or Rs 20, whichever is lower, per executed order in intraday equity and equity futures trade. For equity options transactions, it charges a flat fee of Rs 20 per executed order.
Zerodha Brokerage Charges Overview. In the case of Zerodha, a flat brokerage at the rate of 0.01% on each trade order is charged.
Daily 10% trading volume across NSE, BSE, MCX. The achieved—. National Stock Exchange (NSE) “Retail brokerage of the year 2018”. 
Zerodha is an Indian financial service company that offers retail and institutional broking, ... The model exempts customers from any broking charges on trades and ... in 2014 and 2015, and the NSE "Retail Broker of the Year" award in 2018.