Electrical - Wire NMB 14-2 (Internal)
http://www.lowes.com/ProductDisplay?partNumber=70123-295-28827469&langId=-1&storeId=10151&productId=1193437&catalogId=10051&cmRelshp=rel&rel=nofollow&cId=PDIO1 $30.37. Then 5% on Lowes card ($28.85). Then 10% HomeDepot match ($25.96)
The price varies a lot with the world commodity price of copper, but about $52 for a 250 foot roll.
It is rated for 15 amps. When using it in your house, make sure code does not require 12-2 in that particular area.