What are financial aid options for New Zealand undergraduates wanting to study in AU?
There are some generous scholarships available such as Sydney, ANU, Monash which are around ~30k funding if you achieve a high enough ATAR (Usually 99.95)
There’s also other smaller (usually around ~5k) scholarships available which you can apply separately.
However, there are no comprehensive scholarships that will cover a majority of expenses which is why the Aus may not be as financially viable. You have to think about funding all three years tuition and living expenses which are significantly larger than the top scholarships available.