"This Vampire Wire Multi-Use RCA Cable is separated from a A/V Kit to create a cable that can be used for multiple Audio and Video applications. By doing this, we create a cable that can be used as a subwoofer, digital coax audio, or composite video cable."
?
I'm speechless...

You don't need to spend a ton of money on cabling.

I use Monoprice. Some people here use Bluejeanscable. And some use the Outlaw cables. I would think that between those three you could find something that suits your needs and budget.

Personally I would stay away from a company that advertises that they've created a cable that carries electricity, electricity, or (you guessed it) electricity. Just out of principle if nothing else