Yup, NSW E-Topos are all free - all above-board and legal - https://maps.six.nsw.gov.au/etopo.html
These are the exact same E-topo PDFs we used to pay $5 a pop for, and they are identical to the latest NSW paper maps. All are geocoded and work with various apps. I have tried a few of them out in Adobe Acrobat on the toughbooks and on PDF Maps/Avenza on my phone and they do what it says on the tin.
$0.00 - Bargain