Stillpoints - snake oil?

" Still makes no sense to me."
You are looking at it the wrong way. First, there are 100’s of aftermarket power cords available. I see no reason that high-end audio makers would waste time & money on a process that would not make them any more money. One gets a generic cord (low cost) with your purchase that will work fine for many users. YOU have the option to experiment with aftermarket cords or not, YOU decide. The manufacturer will not and should not recommenced one over the other, there is no upside for them.

I use them. I like them. I recommend them. Galen Carol sells them through his website. Other dealers do the same. Galen is a very good dealer. I've made several purchases from him. I have found that in my system the Stillpoints Ultra SS devices have the most positive impact under my source(s), DAC and preamp--in that order.

Yeah, I assume a mains cable is wire and if the wire meets the specs then it's going to work optimally for what it was designed for and the manufacturer who sold the 'wire' with the component stands behind it , just like Ford isn't going to put sub optimal tires on their cars or expect people to go out and buy uber expensive tires and toss the ones out they sold with the car. 

Do these high end audio makers recommend any of these $500 cords or $1000 isolation devices? Does say Esoteric say if you use a $ 500 AQ cord and Stillpoints our amps sound a hell of a lot better? We recommend you buy them. Maybe they do I have no idea.