I do not disparage those audiophiles who can afford to buy such cables and believe they hear a difference. It's their money, their ears, their choice.
In my heart, I'm envious. With that same fistful of funds I could step up to much better speakers, a much better receiver (or pre-pro and amp), and do something about world hunger with the change.
There is however, a room reserved in hell for the charlatans who sell this stuff. I had called Nordost recently, they are headquartered less than 30 miles from me and I appreciate business trying to "make it in Mass." Having spoken on the phone with a really nice woman at Nordost about "what's the warranty on your product that I'm testing?", I felt for her. She, just like so many selling solar panels, extended warranties on a car I never owned, or setting appointments for home security systems,...simply knows not what her leaders are actually doing. She just needs to feed her kids. Sad.