Anyone here ever use of these purifiers? I got one from a guy on craigslist NIB for $25 bucks. They start at $168.99 at this site. I think I got a good deal. What do you guys think?

Here is a link to the manufacturer website.
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....he felt the prompting of his heritage, the desire to possess, the wild danger-love, the thrill of battle, the power to conquer or to die. Jack London