Way too high.
Monster debuts world's fastest HDMI cable and 3.5mm superthin cable
It's a digital signal, for cryin' out loud. It either gets through at levels sufficient to tickle the receiver, or it doesn't. For pretty much any concievable application, you'll be just as well off buying a $10 HDMI cable as you would be by getting a $200 Monster cable.
But if you've got the money to waste, send it to me. I'll be glad to send you a $10 cable for the discounted price of $160!
J.