$40.80 – 400Lm Cree XP – G2 USB Rechargeable High CRI Multiple Outputs.
ATM you can buy NITECORE NU30 Headlamp for $40.8 (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
Latest price update (UTC time):
Banggood ($40.80)
Banggood warehouse is located in China. The question is – is it a good price? Well, this price is higher than average price ($36.47) Only one coupon available!
Link: Banggood product page
Price without coupon: $42.95
1. ($40.80): BGCYCLE5
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGCMP35
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for NITECORE NU30 Headlamp. The lowest price was: $33.99.
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)).