Not sure if this is a sale or if prices have dropped permanently. You'll need a .edu.au email address to register for store access. No, there is no "easy" way, to my knowledge, to get a .edu.au email address without being a student or education worker. But most high school and uni students will have one.
There is also the $50 newsletter sign up voucher, but it's been difficult to get in the past, so I haven't included that discount.
128 GB $811.85
256 GB $876.85
128 GB $1,201.85
256 GB $1,266.85
512 GB $1,396.85
Various colours including custom colours are available in each model.
For the SD card and headphone jack lovers out there the S20FE 5G is also at good prices. Well the 128gb version is, at least.
128 GB $719.20
256 GB $959.20