You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
1x 21700 or 1×18650 Li-ion Battery (Not included), Brand: Astrolux, Max Output: XHP50.2: 3500 lumen, SST40: 2300 lumen, Size: 26650 version: , Model: EA01, Battery Configurations: 1x 26650, Blue, SST40: 98000CD, 116mmx 41mm (Lengthx Head diameter), 1x 26350, Intensity: XHP50.2: 68000CD, Grey, Charging: Integrated charger via USB-C, Firmware: Andúril UI, 160g(26650 version) [without battery], SST40: 616 Meters, Emitter Type: XHP50 / SST40 LED, Material: Aerospace-grade aluminum alloy, Waterproof: IPX7 Waterproof, 26350 version: , 5700K, Switch: Electronic side switch, Driver: FET+1 driver., 81.5mmx 41mm (Lengthx Head diameter), Color Temperature: 5000k, 6500K, Color: Black, Range: XHP50.2: 521 Meters, Weight: 120g(26350 version)
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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($56.01): BG589b2e
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGEA01, maEa01, BGASTROLUX, BG1128, BGAST25, BGXN02, cbrIDgTec, FIN7833, BGMYB24, BGASEA01, BG10OFFAFF1, BANGGOODSD, 6GSGIT, BGTorch4, 00c906, BGtorch2, BGtorch3, BGAlerabat15, BGtorch7, BGAlerabatI, BG1b07c5, BG34bd27, BG8Alerabat, FIN8330, BGd2afc7, BGLED07, BGOutlight10, BGe4be75, BGd57765
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Astrolux EA01 SST40 Flashlight ($-3)
2. Europe – Astrolux EA01 XHP50.2 Flashlight [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Astrolux EA01 XHP50.2 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)).