I have been looking for a decent bicycle backpack, Deuter make great backpacks, this one has a suspended back panel to allow airflow on your back. This one appears current on the Deuter AU site, however there is potentially an updated model on the Deuter Europe site (green / red) that is sold on wiggle for around $20 more.
Google search shows there was a Groupon deal with these backpacks for Brisbane that has ended for the same price +- postage.
There are also other models, this one also seems like a good deal @ $98.95 delivered:
http://theactive.com.au/deuter-backpack-sale/deuter-trans-al…
Delivery is stated as 2-3 weeks from end of sale.
I would appreciate if you use my referral below to sign up (I get $10 on a purchase apparently :) ):
http://theactive.com.au/r/uu4089263
It is the blue one listed here: http://www.bogong.com.au/deuter-cross-air-20-exp-1.html
or here
http://www.deuter.com/AU/ae/bike/cross-air-20-exp-32091-2251…
ergh sign up wall.