Need suggestions for a quality & affordable Ozone Generator.

I'm starting a complete healing routine including Liver / Colon flushing, Parasite/Deworming, Heavy Metal removal, Near Infrared Sauna use and I would like to incorporate Ozone for drinking water and ozonating oils (Olive, Macadamia, etc.). Can anyone suggest something of quality that doesn't cost many hundreds and/or many thousands of dollars? I'm a student, so budget is tighter than usual.

Thanks in advance!