About buying a zapper - and other forms of electromedicine...

If it were me, I'd use also OZONE therapy and nutritional supplements, if 
cancer is the problem. See the oxyplus egroup.

You can make your own devices.  I'd seriously recommend that you try to find 
people who are willing to help spread this technology. It is better than 
medicine in most cases, but nutrition is equally important.

ciao

Duncan