Winew Tek via Walmart offers this Motion Sensor 8-watt Wireless Weatherproof LED Spotlight for $11.99 with free shipping. That's $4 below our mention from two weeks ago and the lowest price we've seen. (It's the best deal now by $5.) It features 600 lumens of brightness and IP65 rated waterproofing. It requires four D-cell alkaline batteries (not included).