If you have a membership with any union, you are probably eligible for this. https://files.ozbargain.com.au/upload/199347/88121/ff_unions...
I applied via Union shopper website to get a Union shopper virtual discount card
Current discounts are:
6c per litre (inc GST) off the full pump price of Diesel, ULP91 and E10 ULP;
8c per litre (inc GST) off the full pump price for premium fuel (95 & 98) purchases;
No minimum purchasing volume limits to qualify for discounts but there is a maximum of 120 litres per transaction;
5% off store purchases excluding newspapers, magazines, all Telco communication items including handsets, phone recharge vouchers and prepaid mobile SIM cards, credit or other prepaid cards, cigarettes and tobacco products, Go Via cards, trailer or equipment hire, and/or any other third party supplied product sold by Freedom Fuels as an Agent.
Please note that your club card is only able to be used at Freedom Fuels participating sites