Okay, so I'm one of those people with an audio system in my car worth about $1000 yet even I'm struggling to find a reason for the cost of these cables. I know these aren't RCA cables, but seriously, there's very little sound quality difference between the $5 set I originally had and the $30 RCA cable I have now. I can't imagine that spending $100+ would be any different. If you want better quality and more SPL, you can get higher gauge wire but without the requisite equipment you don't even need that.