Costo (at least where I live) has 60W equivalent LED bulbs for $15 - $10 Instant rebate. I picked up 6, going back for 12 more tomorrow. The actual bulb is in the link below.
http://www.amazon.com/Feit-Electric-Watt-13-5Watt-Replacement/dp/B008GO53YA
http://www.amazon.com/Feit-Electric-Watt-13-5Watt-Replacement/dp/B008GO53YA