You know if I had a penny for every item/idea that I didn't know I needed to know about from this Board.....
A few of the reasons: I didn't want to spend thousands of dollars, which is what Costco is selling them for. I saw the company and this technology mentioned many times in an online group I belong to. The company offers a lifetime warranty and there are great reviews of their other products on Amazon. The main moderator for the online group posted her rave review, and then I realized one of my main podcast peeps also uses one of their machines and has raved about it.
Some physical therapists have posted about how post-stroke patients have benefited greatly from this company's machines, and I've seen before/after photos of very obese people who've lost weight and regained a lot of mobility from this--the videos and pictures look real to me, but these are only part of the reasons I'm committed to using this for my family, including my father.