Currently I don't know of anyone that has Metarhizium amisopliae for sale as a culture.
You do have some options though, Universities might have some of the culture and if they do, you might be able to get a small sample to grow out in petri dishes.
Another option is to culture an ant or other insect you find that has been eaten by a fungus and then use that culture to make even more.
Paul Stamets is no longer in the
mushroom kit business by the way, he is changing direction of his company somewhat and so, isn't going to
sell spawn or kits starting in 2020.
His new direction goes along with his current research and I'm sure they need the space and time for the new products they are working on.
Redhawk