rockm
Spuds Moyogi
Who is promising a miracle?
Sure myco will happen naturally. People add the myco spores to speed up the growth of the mycelium so the plant can absorb nutrients more quickly (and not wait for nature to eventually reach a critical mass of myco). Disease resistance is an added benefit. That $20 bottle will literally do 100 plants. $.20 a plant is too much to spend for a healthier, faster growing plant? It works and it is cheap. I'm not claiming you're ignorant, I just believe that your perception of the cost and value of adding myco spores is incorrect.
Oh, c'mon, the "is that too much to spend for a healthier, faster growing plant" and the "$20 bottle will do a 100 plants" stuff could be lifted from any hard sell marketing campaign. The first is a false statement meant to instill guilt in a buyer and coax the $ out of their pocket. The second deflects from the rather high price tag on the stuff.
It smells an awful lot like the hype that goes with this
http://www.superthrive.com/
My trees are already healthy and fast growing, and I don't doubt that many other people's are without buying this stuff. I also don't doubt that people who may be buying it already have it in their bonsai pots.