Many Stock broker gets trade cleared from Professional Clearing Member and pay the fees for this is called Called PCM Fees. Such fees cannot be recovered from client however Stock Broker are adding in clearing charges or taking as turnover charges, which is illegal. Who ever complaint to NSE, got refund along with interest. Read my Blog on this aspect Overcharging ‘Exchange Transaction Fee’ by Many Brokers in India
https://fyers.in/charges-list/
https://duck.jainam.in/Pricing/ListOfCharge
Can you offer lifetime brokerage with onetime charge like mirae or jainam or wisdom capital?