Not sure if this is a short term promo or a permanent change, but I just noticed they have increased the cashback from 2% to 2.5%. Combine with the 20% off certain stores deal https://www.ozbargain.com.au/node/208273
As of 6/1/16, 3:00PM AEDT, the ongoing cashback rate will be 1%.
As of 8/1/16, 6:00PM AEDT, the cashback rate will be 2%. See forum post
As of 8/2/16, the cashback rate is 1.25%.
As of March 2017, the cashback rate is 1.3%.
As of September 2017, the cashback rate is 1.25%.
dupe