Logged into the app today and it prompted me to look at the Marketplace within the app. You can purchase discounted gift cards very quickly. Pretty good if you’re already in the store.

EB Games – 6% off
Caltex – 3% off
Myer – 5% off
Woolworths – 4% off
Dan Murphy’s – 3% off
JB HIFI – 3% off
OPSM – 7% off

Edit 9/9: Now available through web portal also (thanks relentless).