Credit to ozbargain for posting this deal.
The deal only works if you register via a referral link.
You also get 3 points per dollar spent at supermarkets which opens the oppurtunity to buy gift cards for other retailers (Myer, JB, David Jones, Hoyts, etc) at Coles or Woolworths
Minimum income is 50k
Not sure if this is allowed but here is my referral link if you want to benefit from the deal (removed)