As it says in the title 50% off the menu prices of Value, Chef's Best and Traditional Pizza's for today only.
Pro tip, On the traditional and chef's best you can swap 2 ingredients with no surcharge eg. Order a grand supreme remove beef and baby spinach then add Double prawns. For my store this pizza comes to $5.47 with the code applied.
Enjoy!
Edit: It's appears that most stores are out of beef so they're offering bacon instead plus a 50% off voucher for your next order.
No beef at my local. My stomach has never been so disappointed.