Further to the $600 free brokerage offer, this offer is available to selected Netbank customers.
However, my assumption is that everyone(existing CBA netbank customers) is eligible to apply for this offer via attached linkage.
Terms and Conditions can be found at the bottom of the page.
Oh, it's also extended to 15 equity trades. (From 12.)
Too bad I already signed up last week. :(
Note that to actually make use of $825 in brokerage credit you need to make 15 trades in the order of $50,000 each.
Otherwise brokerage is only $20 and you will make use of $300 credit. (Which is good, but you still need to use it prior to October 31st.)