Very true. I have seen $20K+ speakers a foot from a wall in a maybe 10'X15' room with all expensive tube electronics and it sounded like all bass, overwhelming all the instruments. Fed by over a $20K multi-arm turntable. What a waste of $$. Who knows how much the cables cost, but I am sure they aren't cheap. They looked very thin, so maybe silver? Who knows.
I guess if you have a mid 6 figure system, $10K cables are par for the course, and you can hear a difference.