Although spending more on audio cables doesn't get you better sound quality, nothing annoys me more than a cheaply built cable. I can't stand it when they are cheap, glued together, piece of junk cables. I'll spend 2$ more to get a braided cable, or something like that. 500$ is way too expensive for a cable, but comparing a Monster HDMI cable to a cheap 5$ generic cable isn't going to get you better picture, but they will be better built, and more durable; I guarantee it. I won't spend double for a Monster cable, but I would say the difference in cable quality on my CM Storm keyboard, and a cheap 3$ mouse from Target is nowhere near close. I like better built cables for some things, but for speaker wire, and things like that, I could care less. And yes, I also realize more "Premium" audio cables do not improve quality, just looks and durability.
So I'd just like to throw my two cents in this argument about more expensive cables. Not always are they a waste, but spending 495$ more for a USB cable is not justifiable.