Sunvalleytek via Amazon offers Prime members the TaoTronics 300-Lumen LED Motion Sensor Light, model no. TT-HSL003, for $16.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.76.) That's the lowest total price we could find by $3. It features a 25-foot range, 120-degree sensor, and operates on four D batteries (not included).