For Myer One members only, from 02-15 Aug, buy 2 toys and get 1 free. The cheapest of the 3 will be free. Includes LEGO.
There was a voucher provided in the booklet that they sent. Some Myers have the sign up but apparently the Chadstone one didn't. Just check with the cashier. You shouldn't need the voucher as you just need to present your Myer One card.