I can't agree with you more. If you are interested in looking at one of these units, let me know.I would bet the best 100 people here can do that...and a few more. Personally, I had a TENS machine apart and traced out in 3 hours. I had the schematic because I made the schematic. Therefore I could build one. A fair number of other people on this site can do the same. This is a pretty classy website in spite of the fact that it is on the same Internet with things like cat cartoons, actors giving each other awards, and idiots posting their personal failures on YouTube.