Home Depot offers the EcoSmart 14-watt (50-watt Equivalent) R20 Daylight CFL Light Bulb 2-Pack, model no. ES5R214IB265KCAN, for $5.88. Choose in-store pickup to avoid the $5.99 shipping fee. That's $10 under the lowest total price we could find for a similar 2-pack of EcoSmart R20 light bulbs elsewhere. The bulbs feature 350 lumens brightness and up to a 7.3-year lifespan based on three hours a day. Deal ends December 31.