If you picked up one of the cheap Officeworks Brother Laser printers (about $32 I think) but loathe paying the absurd $60 that they charge for Toner then you may like to try the Good Guys who have the genuine Brother toner for $42.50 with free pick up instore (http://tinyurl.com/9hlxzrp). I don't know what their charges are for delivery sorry. Happy for anyone to comment if they have purchased previously.
Alternatively an OzB post earlier this year is still active for $18 + $9 post - http://www.ozbargain.com.au/node/65329
And finally, if you are the DYI type of OzB'er then maybe consider this option which provides 5 x refills for $45 incl. delivery) - http://tinyurl.com/8ozf7jq
*** Please note that the refill technique will not work on the starter toner cartridge ***
TN2230 is also at a decent price, $48.20 (it's for the Brother D2270 printer). Officeworks sells it for $74. Thanks.