I am ashamed to own a Denon receiver, this is worse than Monster Cable!
Initially, I saw a post about this ummm.... "interesting" pricing at the Inq.
A $499 5' ethernet cable? I thought they must be kidding.
Unfortunately the Inq had it right; as visiting the Denon site brings us this:
Right now, I am ashamed to own a Denon receiver. Don't buy that Denon overpriced cable, go to a dollar store, and buy a $0.99 5' Cat-5 cable, or to a network equipment supplier and buy a $5 Cat-6 cable - you cannot possibly tell the difference.