Hi @Pinkcloverss I bought mine here in Melbourne at Creative Wigs
https://www.creativewigs.com.au/ you can also order online. They have a great selection . I just looked and mine isn't there but it was closest to the name "Kelly". I had long hair and this felt great on ( I wore mine all through Winter, which sounds like you will be too) and it was nice to still feel hair on my shoulders. It felt and looked natural and a lot of people who didn't know I had cancer , thought I'd had my hair straightened! But if you don't want something like your own hair ....go crazy and invent a new you!!
I went to the Cancer Council (they're in Sydney too) wig library first and as their selection didn't suit me, they gave me a $70 voucher to spend at Creative Wigs . Go for a synthetic one, they are much easier to look after , look like real hair and are way cheaper. Good luck with it all, take care xox