Sale price expired April 30, 2016
Amazon is selling the GRDE Super Bright 4 Modes Waterproof LED Headlamp for only $19.99 + Free Shipping when you use the coupon code YIIX7FTR. This drops the price down $8 lower than the best price out there.
This is a great headlamp, snagging a very high 4.5/5 stars from over 220 reviewers. The headlamp can have up to 100 yards visibility in the pitch black, includes 2 rechargeable batteries, and has a bunch of other nifty features for nighttime hiking as well.