It’s not a Friday the 13th prank, this really is a $499 ethernet cable. Yes, the stupid little cord you plug into the back of your computer to get online. These, however, are for audiophiles, a demanding client vector requiring the suspension of all faculties of reason. It contains “high purity copper.” Ahem. After Cat5 or Cat6, copper is just copper. The extra insulation does make it better than a regular ethernet cable, but not by hundreds of dollars.
AK-DL1 [Denon] (Thanks to Stephen!)