ALakacam via Amazon offers the EZiView 9-watt Motion Sensor Light Bulb 2-Pack for $25.99. Coupon code "BKLTRCVT" cuts that to $12.99. With free shipping, that's $13 off list and the lowest price we could find. Each bulb features motion detection to 16 feet, and auto shut-off after 60 seconds. Deal ends April 30.

Update: The price has dropped to $12.99 before coupon, $6.49 after.