Sansi via eBay offers its Sansi LED Motion Sensor Outdoor Security Light for $46.19 with free shipping. That's the lowest price we could find by $14 today, although we saw it for $5 less during Black Friday week. This 30-watt light is waterproof and features a 180° motion sensor with a range of up to 50 feet and 3,400-lumen output. Deal ends January 20 at 9 am ET.