Amazon offers Prime members the Newhouse Lighting 3-watt Energy-Efficient LED Clamp Lamp Light in Black, model no. NHCLP-LED-BLK, for $16.85. Clip the $1 off coupon on the product page to drop the price to $15.85. With free shipping, that's the lowest total price we could find by a buck. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.94.) Features include a flexible metal gooseneck, 300 lumens of brightness, and a clamp that will attach to a variety of surfaces.