If you're looking for cheap and simple to use one then I would suggest getting the http://zapperplans.com/ zapper.
I never use it for anything other than coughs colds etc. but I'm blessed with good health sooo... But on their site they have numerous testimonials
of it curing Cancer and other diseeses,
so I would definately reccpmend it.
hope this message has been helpful,
goodbye and Godbless