since you are in Australia, Amazon would be your best option as they offer international shipping to Australia. Here is the one I got off of Amazon. The zippered cover and smaller pockets were the determining factors for me. Mine came with a warm/cozy cover for winter & I also bought their own cotton cover separately for summer time & it worked out great year long. Now its starting to get chilly again so I will be switching back to cozy cover this week I think.

try amazon USA. They ship to Australia. Here is the one I got. I bought mine from their own website but saw that they also have an amazon store & I am pretty sure Amazon ships to Australia. here is the link https://www.amazon.com/gp/product/B07BPBHWLG

I am in love with mine, the minky cover is so so soft. The zipper inside is super smart and the little pockets help the weight spread around fabulously.