If you do manage to get seeds, perhaps investing in some STS spray so you can reverse and make your own. Could be a permanent solution.
One of the vendors here, Twenty20 Mendocino, make a nice STS kit for reversing a plant for pollen and making your own seeds. I don't know if Etsy ships to AUS but perhaps you can find something similar if they don't. Just an idea! Good luck.
This Seeds item by Twenty20Mendocino has 304 favorites from Etsy shoppers. Ships from Hydesville, CA. Listed on May 1, 2024
www.etsy.com