Found this offer on my AmEx issued card. Not yet confirmed whether it applies to Bank issued.
Appears similar % off to this deal, except this has lower spend requirement ($100 for $25 vs $199 for $50 credit).
https://www.ozbargain.com.au/node/188140
THE ICONIC
Spend $100 or more, get $25 back
Register by saving the offer to Card and spend $100 or more, in one or more transactions, online at theiconic.com.au before 18/05/15 to receive one $25 statement credit. Limited to the first 10,000 Cards to register.
FYI: This appears to be Amex issued cards only. No bank issued Amex's.