Audio book sale at Audible, most for less than $5.
Here is the direct link if it doesn't show up on the Audible home page. Aussie users should be able to buy at least some, if not all of the same titles, but, as commenter "3" mentions below, you need to sign out and switch regions on the Audible app to access them, i.e. audible.com instead of audible.com.au.
Also, for US Amazon accounts only, Terry Goodkind's Wizard's Blood of The Fold (Bk3 or Swort of Truth) ebook at Amazon is free today: Link
Add US$1.99 for Audible narration.
Edit: fixed the ebook link and added book title
Edit2: clarifications on region issues
Edit3: replace free ebook with book 3 since book 1 offer has expired
Wizard's first rule is awesome I'm on the fourth book now