On sale at Harvey Norman and looks like Amazon has price matched it, but Amazon has free shipping.
This is the Harvey Norman link: https://www.harveynorman.com.au/age-of-empires-iv-pc.html
I believe this is the lowest this game has been since release, not sure how long the sale will last.
No physical discs, should be just a code inside a box. So you won't get the game instantly like buying from steam, still need to wait for it to be delivered/picked up.
UPDATE: Looks like Amazon price is back to $99, Harvey Norman is still showing $44.
Obligatory its on pc game pass reminder…