Looks like the TRS rules have changed again, and now you are allowed yet again to use your Duty Free allowance ($900 for adults, $450 for kids) by shopping locally:
https://www.australianfrequentflyer.com.au/nasty-trs-change-…
Maybe Harvey and the other big local retailers stepped in?
Strange that it didn't require any Law or Regulation change, it simply seems to be an administrative decision that Australian Border Force have, so they could change their mind again at any time?
See previous OzB discusion of TRS benefit to Australian being cancelled:
https://www.ozbargain.com.au/node/684260
Thanks for sharing this.
It just shows that our public servants sometimes live in their own world and dont understand what generates income to our economy. (note I did say sometimes not always).
How silly it was to encourage people to buy goods overseas when they could at least give jobs and some income to Australians and even maybe small amounts of tax from the income that these businesses generate.