Figured this out whilst trying to order pizza. Dominos have a new “Mega” range of pizzas that are 40cm. They are in the system, however cannot be ordered as of yet. If you attempt to add one of these into your cart, a pop-up message apologises for its unavailability and provides you with a free -$3 off your order.
Photo attached. Not sure if it’s stackable! Tested on stores around the Sydney lower north shore and CBD.
Edit: Thanks @kamoi - Codes can be stacked for $6 off and can also be further stacked with a 3rd discount code.
For example:
$0.95 Hawaiian
369219
891728
558672
$1.95 Traditional
369219
891728
477023
Does this work with value range pizzas? It does say any pizza purchase…