@DPL Online
Some unsolicited suggestion from my side.
Ditch the Pro plan branding. Call it the default plan. By default people will be put into that plan.
At any time the user can move to yearly by paying 1500. This subscription should be one time. Valid for 365 days from the date of subscription. No Auto renewal.
Once subscribed there should be no refund and like wise there should not be any cancellation due to any inactive clause or something like that.
At the end of year the user should be put back to default plan. The user can subscribe again if he likes.
There should not be no feature difference between plans. Everything else remain same.
As soon as you gain volume match the total transaction charge to that of Zerodha/RKSV as quickly as possible.
This approach will be very transparent and flexible for many traders.
IMHO this is the only success formula for you otherwise it may be tough path.
Good luck.
Again make 1500 for all three segment NSE/BSE/MCX-SX. Nobody will pay individually 1500 for BSE and MCX-SX. MCX-SX no trading ditch their membership and save money.