Definitely check out this company run by a very well respected member here, there’s a whole thread here about the company if you search for it, and his website even lets you choose AUD for ordering:
I’m a huge fan of his seeds, and the breeder mixes at $1/seed are a great way to stock up on interesting things with a known/unknown lineage but all quality. Check out my grow log if you want to see some of the strains, I’ve grown Cinderella 99 twice, one at a time, and then two of the OG Mix and one Cinderella Mix, all have been fantastic! Got some Ortega Mix vegging now and some Princess 88 to pop soon!
If you wanted to really go for it, I’d say get a pack each or more of the breeder mixes @ 2x25 seeds for $50 and do this deal he’s got for the breeder packs, it’s ALL good: