Myer is currently having their mid-year Big Toy Sale, as posted in this other thread.

Myer is also having another brief sale with 20% off original price of selected toys. Ends Sunday 26 June.

Generations Fortress Maximus: hot price $269.95 (same as in their Big Toy Sale)
Platinum Edition Jet-Seekers Set: was $199.00 now $159.20
Platinum Masterpiece Soundwave: was $299.00 now $239.20
Leader Bumblebee: was $89.95 now $71.96