Sort of. Of the links you provided only one of them - at Coles New World! - is for Cassava* Flour: https://shop.coles.com.au/a/a-qld-fnq-townsville-aitke/produ... and online. I’ve never seen it at my local Coles or Woolies (or Aldis, or Foodland, or IGA, etc)

The others are Tapioca starch or other products- not the same as flour.

* and even then it is called Tapioca Flour so may not be the same thing as Cassava Flour. It is some times difficult to distinguish between Tapioca (starch-heavy?) and Cassava (starch-moderate?)