LEGO UCS 75059 Sandcrawler in Big W catalogue.
Sale starts 16th June.
Hard to find this in stores and normally $449.99 at LEGO S@H. For 8% off BIG W eGift cards, see the link at the bottom of the post. You can purchase a fixed $400 denomination for $368 and you'll be left with $2 on the eGift card afterwards.
Part of the Big W Toy Sale 16 Jun - 6 July
8% off Big W eGift Cards
Mod: Added extra details about eGift card deal as not everyone will be aware of the deal
Link doesn't really go anywhere.