Hi John
No-one sells what are really earthworms – everyone sells composting worms.
I don’t know of ANYONE in Australia selling soil dwellers.
Proper earthworms have such a long life cycle that it is hard to breed them – 2 to 5 years to reach breeding age – vs 3 to 4 months for composting worms.
There’s information in my FREE Virtual Workshop Introduction about the difference between soil dwellers and composting worms, you may like to check that out here:
http://www.thewormman.com.au/virtual
But . . . a great way to introduce composting worms right into your garden is to use a garden feeding station.
Having these (and the products of composting worms) may also help attract and nourish native soil dwelling earthworms.
You’ll find more information on how you can make one, including how to harvest it when it eventually fills up on my student resource page at:
https://thewormman.com.au/help
Thanks for asking your question
Regards
Brian