The profit you have stated probably was after a loss or purchase...

The profit you have stated probably was after a loss or purchase of other shares, so you needed to pay for them.

ComSec works on a T-3 but in fact it is really a T-1 for buying and T-2 for selling. When signing in you should always look at you estimates as this will help you not get a rejection fine in the future.

If the fine is your first ring ComSec and ask for leniency, in most cases for first timers you will get it reimbursed.