I bought a used one for 1000 on EBAY and it seems to work well. I believe it cured my prostate problems and I rarely have to get up anymore to go to the bathroom anymore. Also I gave a gallon to my sister who had lumps in her breast and she was going to the doctor 4 days later to have a biopsy done. She was scared to death and I said, why don't you just try the water, what do you have to lose. She agreed to try it and when she went the doctor came in and then left the room, then came in with another doctor to examine her and finally they pronounced that there was nothing to biopsy as the lumps are all gone. I believe it works and I would recommend it. I would say that you really have to learn and understand the theory of how it works cause it is easy to not use it right and make water that is not any different than what you started with and they don't give you much documentation or instructions. People who say that you are on your own after you buy it are right. but I do think it does what John Ellis says if you have it working properly, hope this helps.