Today only until 9 am ET (or 100% claimed), Amazon offers its Prime members the Coast HL7 Focusing 196-Lumen LED Headlamp for $19.99 with free shipping. (Non-members can spend $25 to bag free shipping; otherwise it adds $5.44.) That's the lowest total price we could find by $31. It features two settings (3-Lumen and 196-Lumen), a running time of up to 76 hours, and beam distance of up to 357 feet. It requires three AAA batteries (not included).