Lightake offers the Cree XR-E R2 LED Waterproof Headlamp in Black, model no. NEW-566, for $7.48 with free shipping. That's the lowest total price we could find by $3, outside of the price below. It features a white LED light, 220-lumen brightness, and three modes. It requires 3 AAA batteries, not included.
A close price: Meritline charges $7.99 with free shipping. Expect this item to take two to three weeks to arrive.