You can create price alert here, copy coupons and view price history. What is best price?
Anti-drop height 1m, Size 96(length)*27.5(head size), Waterproof IPX8 (2M underwater), LED 2*XP-G3 / 1*XP-E (Red) / 1*XP-E(Green), Beam Intensity 3306cd(18650 battery maximum light intensity), Illumination distance 115m (18650 battery maximum range), Weight 75.8g
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGOutlight10, BG589b2e, BGMARCHSALE, BGAUGUST8, FIN07354, BGCAPITALOS8
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for JETBeam 1M GUARDIAN Flashlight.
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)).