https://www.bigw.com.au/bigw-catalog...d=42467&page=5
Beast Wars Vintage:
Cheetor and Rattrap $39 from $59.
Optimus Primal $55 from $85.
Megatron $75 from $105.
WFC Kingdom:
Deluxes $28 from $36.
Voyagers $39 from $49.
Leaders $69 from $89.
Edit: updated the URL as Big W changed it.