Purchase a MagSafe 2 Cord Only?
I'm assuming you're talking about the detachable AC Cord (http://support.apple.com/en-us/ht2346) 

Amazon has one for US outlets:  http://www.amazon.com/Power-Adapter-Extension-Apple-Macbook/dp/B009OA61UK
But, it is not an official Apple part, and (especially when it comes to power supplies) you might feel safer to stay with the sanctioned parts.

Your best bet for a real cord is to find a friend with a MacBook who plugs their charger directly into the wall, and ask them for their spare cord.