I did ask to mark them as a gift (forgot to enter it in the instructions) as a preventative measure but no idea if it'll really have an effect, think about it.
The government want retailers to charge on their behalf, auspost ain't gonna police/know what has been charged and what hasn't, but if a whistleblower steps in good chance they'll be IP blocked.
I know mandarake mark them as gifts without question or even asking so that's nice but perhaps unnecessary, not that I'm taking chances