Healthy Root Fungus

Hey all, I was wondering if anyone has heard of or tried Rick's Monster Plant Grow.
It's supposed to be some kind of fungus you work into the soil or rub on the roots
during transplanting that increases root surface area, in turn making a "monster"
plant.

Its sold for 250 or so for 6 bottles (not sure about specs, just glanced) at
http://mycorrhizal.com/index.html

I saw some pics of plants on the right side of http://medicalmarijuanaguide.com/
page and it seems that it really does make a gigantic single plant, 9'X9' in many
cases.

I'm thinking about buying this and using it, I have a lot of outdoor growing room
and am interested to see how big I could get a plant to be with this.

Comments, suggestions?