Tanga offers this Thermal Leak Detector / Infrared Thermometer
plus $3.99 for shipping. That's $9 under our November mention of a similar thermal leak detector, and the lowest total price we could find by $6. This device purports to protect your home from energy loss by evaluating temperature drops or rises in a room. It operates on two AAA batteries (included). Deal ends March 22 at 12 pm noon ET.
Update: The price has since increased to $15.99 plus $3.99 for shipping.