Check your emails! Seems like a pretty good deal. If you make a purchase before 31st of December with a given coupon code, you get a bonus $10. Here is the text from the email:
Where will you spend your $10?*
Take $10 off when you make a purchase with Suncorp Benefits before 31 December 2019.
You can redeem your bonus offer on 2 x $5 grocery eGift cards, or take $10 off a bigger purchase. That's $10 off anything, from homewares to electronics, on top of your everyday discounts.
With over 100 retailers, the hardest part will be choosing what to buy. When you are ready to finalise your purchase, checkout and enter the following coupon code on the payment page to redeem your bonus credit.
Mine says "To start shopping, you simply need to add an active product." I do not have any Suncorp products, but I did receive the code to my account.