Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Astrolux EC03 3x XHP50.2 Flashlight (-3 USD)
2. Europe – Astrolux EC03 3x SST40 Flashlight [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (36.99 USD): FIN4185
Coupon (39.56 USD): F94185
Coupon (48.36 USD): BG8Alerabat
Coupon (48.36 USD): BGOutlight10
(CouponsFromChina.com tip: you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGEC03, MDEC03, BGASTROLUX, BGEC03JL, BGSM30%, BGTBD, BGEC03YR, BG14TH01, BGCN1102, BGBFJ01, BGAEC03, BG1128, BGYW06, BGAST25, BGXN01, BG10OFFAFF, BGwhielabel, BGASEC03, BGflashlight, cbrIDgTec, BG10OFFAFF1, BGEC03ZN, BANGGOODSD, BGdeals242, BGASTB, BGAlerabat15, BGtorch7, BGtorch2, BG1ba519, BGAlerabatI, BGASTC, BGtorch9, BG845251, BGLED07
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Astrolux EC03 3x XHP50.2 Flashlight (-3 USD)
2. Europe – Astrolux EC03 3x SST40 Flashlight [EU] (-3 USD)
Price history and price alert
Price history (for all/most countries) for Astrolux EC03 3x SST40 Flashlight is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).