That was a long title. Fyi - the Amex offer is separate, and ends next Thurs.

Myer Sydney City is offering 20% off when you purchase 2 or more Toys.
Includes TFs (I did see 1 Skullcruncher, and a few Blurrs and Scourges, along with many Galvatrons and Blasters).
Offer excludes Lego (and a few other things I didn't pay attention to).
The offer is specific to their city store.
Ends Sunday 04/09/16.

Amex coincidentally has offered a $20 credit-back when you spend $50 or more at certain stores as part of their "Vogue Fashion Night Out". Most of these locations are womens beauty & fashion stores, but Myer Sydney City and David Jones Sydney City are included.
You need to register in Amex's link above before spending.
Ends Thursday 08/09/16.

Notes:
* Amex offer requires the final spending price to be over $50. So if you're planning to nab 2x Deluxes for $30ea, you'll need to add something small (Lego Minifig?) to get it over the line.
* I bought 2x Lego Microfighter Tie Fighters and 1x Lego First Order Battle Pack for $55, and immediately got an email from Amex confirming the purchase and the purchase.