Amazon.com currently has the Black Diamond Spot Headlamp for $18.71:
https://www.amazon.com/dp/B011K7JCXC
This is its lowest price at amazon ever according to 3camels.
Specs:
- One Triple Power LED, one Single Power white LED and a Single Power red LED emit 200 lumens (max setting)
- Power Tap Technology allows fast and simple transitioning between full and dimmed power
- Red night-vision mode has proximity and strobe settings, and activates without cycling through the white mode
- Sleek, low profile design uses three AAA batteries and three-level power meter shows remaining battery life
- Water proof; Protected against water immersion down to >1m (3.3 ft) for 30 minutes (IPX 8)