Staples offers the Brighton Professional 9-watt A19 Dimmable LED Light Bulb in Warm White, model no. BPR43464, for $3.99. Even better, Staples Rewards members get free shipping. (Not a member? It's free to join.) That's tied with yesterday's expired mention and the lowest total price we could find for a comparable light bulb by $3. This E26 bulb puts out 800 lumens for a purported 22.8 years. Deal ends January 31.