Nitecore HC30 NW Headlamp (Banggood, Aliexpress: Cree XM-L2 U2, 1000 lm, 6600cd, 4000-5000K, Battery Quantity: 1x 18650 or 2x CR123, IPX-8 Waterproof Standard, Beam Distance: 100-200m, Beam Angle: 100 degree, Package Contents: 1x Nitecore HC30 LED Headlamp, 1x Headband, 1x O-ring, 1x Switch Cover, 1x Clip (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($46.96): cbrIDgTec
2. ($46.96): m4x2020
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): MNC03, 365fb8, CFNKL, CFCBG
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Nitecore HC30 NW Headlamp. The lowest price was: $35.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).