Here's your power cord:
http://www.musicdirect.com/p-41284-audioquest-nrg-wild-power-cable.aspx
It has some battery-powered kinda active field thingy that conditions the electrons as they flow through the luxuriant length of solid conductors. Or something like that.
The 3-footer is $2225.00; the 10-foot version is a steal at only $5200 - essentially a savings of $222.50 per foot for the longer cable.
IF the manufacturing cost - including Magical Phlogiston Infuser technology - exceeds 20 bucks, I'd be highly surprised. Unless it's USA-made, in a union shop, in which case I think the $5200 ten-footer is barely covering costs.