As one of its daily deals, That Daily Deal offers this Wireless 5-LED Sensor Tap Light for $3.99 with free shipping. That's tied with our May mention, $11 under list, and the lowest total price we could find (outside of the mention below.) This self-adhesive light is wireless and activated by touch. Deal ends July 10.
A close price: DealGenius via Rakten offers a 2-Pack of the same light for $7.99 with free shipping.