Two brightnesses of LED lightbulbs are on sale at Home Depot - free shipping
5000K and 2700K
4-Packs (40-Watt equiv.) for $22.88!
http://www.homedepot.com/p/Philips-SlimStyle-40W-Equivalent-Daylight-5000K-A19-Dimmable-LED-Light-Bulb-4-Pack-433219/205129380