I remember when I used to have an account with Cybertrader that you could change your order and still pay only 1 commission as long as you did it within 5 minutes of the 1st fill. Actually you could trade as much stock as you wanted for 1 commission within that 5 minutes(1 commission for buys and 1 for sells).This was very useful back in the late 90s bull. But eventually they dropped it to 2 minutes. Not sure what their current policy is. Also I remember when I had a NDB account that you could trade all day long for 1 commission for buys and 1 for sells. However the service was slow. Just remembering the old days, Tony