585034
Obvious not as good as BOGOF / 50% off… but may suit your need if you're just after 2 pizzas.
Edit: as mentioned by peterw1 - 10% Surcharge applies on Sundays
Copied from page:
BUY ONE PREMIUM / TRADITIONAL PIZZA GET ONE TRADITIONAL / VALUE FOR $1*
EXPIRES 17/12/18
*Conditions apply. Selected stores only. Online only. $2 extra for each additional topping. $2.95 extra for Premium pizzas. Valid until 17/12/17.
$2.95 extra for premium? Probably excludes hawaiian