I think most people can see this is snake oil, but there are so many overpriced products out there that mix science and pseudoscience that would fool many reasonable people without a scientific background. How about those $500 power cables. So you've got a $500 power cable, are you also upgrading everything back to the power generation plant. How about the affects of your wall outlet, the wiring in the wall, the breaker box, the meter base, the transformer that servers your house, the utility line that powers your transformer, the utility substation, etc.