YMMV on the price. I was able to find one store in my town that had them for $9.98 and a couple that were asking $19.98.
http://www.lowes.com/webapp/wcs/sto...oreId=10151&catalogId=10051&productId=3136869
http://www.lowes.com/webapp/wcs/sto...oreId=10151&catalogId=10051&productId=3136869