Well, science doesn't understand everything, or claim to know everything. Those who say if I can’t measure it, it doesn’t exist are walking on thin ice. You do the best you can with the tools you have. There have been many, many instances in history where science has been proven wrong in its assessments (and those who follow and agree). My point earlier in this thread, which was then lambasted, is that I think science has yet devise a measurement to answer the question of what is the difference. So the Pros shake their heads in disbelief because there is no measurable proof of the claim. Attributes such as 6dB of more signal gain (lower noise floor), and high common mode rejection ratios for differential inputs (near elimination of common noise) have a solid mathematical base.
A number of manufacturers use Cardas, Kimber, and various other brands in their designs. I think the best question is, during the design process what cables (and equipment) were used to complete the design. To answer the $7500 question is different for every audiophile. Hence the previous comment on trusting your ears. There are some extremely good cables for a tenth to a hundredth of $7500, but if we could and we heard a difference, would we?
Now back to your pander…