Came across this, and I thought the prices are pretty good.
Free click and collect in NSW; delivery fee applies for other states.
SanDisk 2TB Extreme Portable USB 3.1 Type-C SDSSDE60-2T00-G25
https://www.skycomp.com.au/sdssde60-2t00-g25-sandisk-extreme…
WD 2TB My Passport USB 3.1 Gen 2 External SSD WDBKVX0020PSL
https://www.skycomp.com.au/wdbkvx0020psl-wesn-wd-my-passport…
SanDisk 1TB Extreme Portable USB 3.1 Type-C SDSSDE60-1T00-G25
https://www.skycomp.com.au/sdssde60-1t00-g25-sandisk-extreme…
WD 1TB My Passport USB 3.1 Gen 2 External SSD WEBKVX001PSL
https://www.skycomp.com.au/wdbkvx0010psl-wesn-wd-my-passport…
SanDisk 500GB Extreme Portable USB 3.1 Type-C SDSSDE60-500G-G25
https://www.skycomp.com.au/sdssde60-500g-g25-sandisk-extreme…
WD 512GB My Passport USB 3.1 Gen 2 External SSD WDBKVX5120PSL
https://www.skycomp.com.au/wdbkvx5120psl-wesn-wd-my-passport…
SanDisk 250GB Extreme Portable USB 3.1 Type-C External SSD SDSSDE60-250G-G25
https://www.skycomp.com.au/sdssde60-250g-g25-sandisk-extreme…
WD 256GB My Passport USB 3.1 Gen 2 External SSD WDBKVX2560PSL
https://www.skycomp.com.au/wdbkvx2560psl-wesn-wd-my-passport…