Hisgadget via Amazon offers Prime members the OxyLED Ultra Bright LED Headlamp in Green, model no. MH20, for $9.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.58.) That's tied with our November mention and the lowest total price we could find by $7. It features a motion-sensing switch, six adjustable angles, and illumination out to 328 feet. It requires three AAA batteries, not included.