Amazon offers Prime members the Mr. Beams Wireless LED Spotlight 3-Pack in Dark Brown, model no. MB363, for $35.46 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $7.25. Walmart charges the same.) That's the lowest total price we could find by $7 and tied as the best deal we've seen. They feature a waterproof design, 140 lumens brightness, motion detection from 25 feet, and up to 400-square-feet of coverage. Four D batteries are required, but not included.