Used to be if you paid for a premium service with aus post you got it .
Used to have a part shift who just dealt with registered ,insured and priority
postings ,it was sent and balanced at every forward delivery point.
We used to handle grandmas ashes, gold and diamond transfers ,and you never lost this stuff ever, I still remember buying all the premium services once some years back and seeing my valuable item flicked into a general mail bag ,, I asked what gives , and was told its tracked and recorded , nothing can go wrong with todays technology working for us
I havn't ever lost anything through aus post to be honest ,but when I send something with some value I always load it up with all the little extras that might help things along and cover up if something goes wrong