Companies that specialise in Australian made single origin chocolate:
Bahen and Co Chocolate Maker
Check them out and add new ones if I have missed some, i know Niu does some but have never been able to get it and it is not their specialty. I also no Monsieur Truffe has a factory but havent seen any chocolate. I have heard Koko Black is looking at getting into actual bean to bar also. Of course their is Haighs but they dont do single origin yet.