Spend $30 at IGA then you can get back 4c per litre. You must bring your petrol receipt and can't be older than 2 weeks. You can fill up the car anywhere, so you could get 4c off from Coles or Woolies (if you are entitled) and then another 4c off at Iga
More details on the link. Only stores in New South Wales, Queensland, and selected stores in South Australia and Victoria.
Maximum Is 80 litres so a maximum saving of $3.20. Still no bad if you already shop there.
WA has a different fuel scheme similar to the coles and woolies deals at selected stations:
http://www.iga.com.au/wa-fuel-offer
Thanks OP , but the price in Qld has been sitting around $1.04 for weeks.