Home Depot offers the Whirlpool Gold Series 4" 50W-Equivalent Dimmable/Directional LED Recessed Light Kit in White/Chrome, model no. WD4L27D1B, for $11.99. Opt for in-store pickup to dodge the $5.99 shipping fee. That's a buck under our mention from two weeks ago and the lowest total price we've seen. (It's a current price low by $18.) It uses only 10 watts and purports to provide approximately 32 years of light.