Wow, $10k+ cables

ebm might be right. Best value Purist Audio cable is Neptune, $1900 retail for 1M pair RCA. You can never find used Neptune.
Anyway, that's wild capitalism, you charge as much as you can, maximize profit before other considerations. At least no one forces anyone to buy expensive cables, that's good.

I'm not a cable denier.  I've heard quite amazing differences in imaging from interconnects.  Not so much from power cords, still I can't say they don't exist.

Every time a thread like this shows up I can't help but think what type of cabling is used at CERN.  They are dealing with the nearly infinitesimally
small.  One would think only the best cables (wiring) would do.

Oh my, look at all those cables:
https://www.techspot.com/news/85717-new-super-collider-approved-cern-62-miles-long.html

When I get a "roundtuit" I'll check it out and report back.

Regards,
barts   

CERN cabling - maybe nothing special after all...except for shielding.

https://www.symmetrymagazine.org/article/december-2007/gallery-in-the-labyrinth