The Oxy-Tech H2O I purchase is from "Living Earth Foods" in Massachusetts and costs about $21.00 for ONE quart plus maybe 6.00 shipping.
The people there are very friendly and informative, plus they have always shipped to me the same day.
I do not believe at ALL that this is a dangerous therapy when used in moderation. I also think that Living Earth Foods can advise you on a proper regimen, since some of the employees there take it themselves.