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Electrical - Wire NMB 14-2 (Internal)

Wire NMB 14-2 (Internal) 

Available at Home Depot or Lowes.

http://www.homedepot.com/Electrical-Wire-Cable-Electrical-Wiring/h_d1/N-5yc1vZ1xg1Zbm6m/R-202304609/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

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.