For those that have saved the Myer offer on Amex (non-bank issued selected Amex), you receive a $50 statement credit for a $200 spend or more online.
You can buy 2 itunes $100 & 1 $50 cards from Myer at 20% off (i.e. $200). Then with the $50 credit, it comes down to $150 for $250 worth of itunes card. It appears that even though this is a gift card, it is a non-Myer gift card and you will get the credit back on Amex (per users that have bought this in the past: https://www.ozbargain.com.au/node/157483).
Free delivery over $100 worth for online order.
Offer ends this Sunday based in the Myer website.
you need to spend $200 to get that $50 credit