The above is the cheapest and purest -- this guy is the only one I have found who does not seem to be after all the money he can lay his hands on and he uses pure rainwater as a mix (great fertilizers too!)per gallon-- about $45 a month if you add 1 tsp to your ALA 3 times a day.
Stuff keeps you well too. I haven't been sick in 2 years. Not even a cold
Fulvic acid is a bio-available chelated molecule that can also chelate. As a refiner and transporter of organic minerals and other cell nutrients, it has the ability to turn bad guys into good guys by chelating and humanizing free radicals. Depending upon the chemical makeup of the free radical, they can be incorporated into and become a part of life sustaining bio-available nutrients. In the event that the chemical makeup of the free radical, such as Mercury, is of no particular benefit, it is chelated, mobilized and carried out of the body as a waste product