BuyDig offers the Mr. Beams Wireless LED Motion Sensor Spotlight 2-Pack in Black, model no. MB360 for $51.49. Coupon code "BRIGHT" cuts it to $26.49. With free shipping, that's $13.25 per light and the lowest total price we could find for this quantity by $13, although we saw a three-pack in November for $2 less per light. They feature a waterproof design, 140 lumens brightness, and up to 350-square-feet of coverage.