Not sure if available at other stores.
Using the coupon from radem12, https://www.ozbargain.com.au/node/244967, 550304, gets 30% which brings the pizza to $5.56. Next, add a "The Aussie" pizza from the Melbourne Range which brings up a code for $3 off as the pizza is not available.
Couldn't find the Aussie pizza to choose, what platform were
You using?