You have to follow the method described below to get it to this price
Credit for the method to get it to this price goes to sylon from this post: https://www.ozbargain.com.au/node/550308
The method copied from his post is:
Click the item and then add it via this "Frequently bought together" section: https://i.imgur.com/n6mwx4V.png
After adding in cart: https://i.imgur.com/DIuKvMb.png
The only difference from sylon's screenshots is that you will be selecting the R5 3600 rather than the processor that sylon selected.
Don't forget cashback
Why is that “expired”? Just tried and it still working. Just search AMD 3600 then click add to cart it works with $244.68