$10.00 – Light Color White/Red Light, Product Name Multifunctional Strong Light Headlamp, Light Gear Four Gear Adjustment, Battery 800mAh High Capacity Lithium Battery, Material High-Strength ABS, Charging Method USB Fast Charging, Weight Approximately 40g, Waterproof Grade Life Grade Waterproof, Size 32 * 55mm, Lamp Wick High Brightness XPG.
According to my DB the lowest price is $10 for Portable Mini Sensor LED Headlamp (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($10.00)
Banggood warehouse is located in China. Coupons for Portable Mini Sensor LED Headlamp? Nope, there’re no coupons in Banggood. I think you want to know if the price is good. IMHO this is a good price, coz it’s lower than average ($10.38)
Link: Banggood product page
Price: $10
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG589b2e, BGcharles03
(you can check these old coupons out, but these probably won’t work)
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
Check out price history chart (for all/most countries) for Portable Mini Sensor LED Headlamp. The lowest price was: $9.11.
Price records source(s): 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)).