Big W are having a limited time flash sale with a range of offers. The one that I think will interest you is 20% off toys.
It looks like not all LEGO is having the discount applied but there should be lots that is included. It seems the newer stuff is what’s not getting the discount.
The offer runs today and tomorrow (Feb 9 & 10) only.
Online only, but free shipping over $100
an online order selecting “click and collect’ works if your local has stock
…that was an expensive 48 hours (well 20% less expensive really!)