$160k AUD is the going rate for senior/principal roles in Australia.
$200k AUD roles are rare in Australia. They do exist but hard to come by.
Most $200k+ AUD devs I know will be working at Atlassian, Amazon, Goggle, not many options in AU, tech is quite narrow, not much variety. It’s also the RSU’s that push them in to the $200k+ bracket.