Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (41.95 USD): FIN6697
Coupon (56.87 USD): BGAlerabatI
Coupon (58.17 USD): BGtorch2
(CouponsFromChina.com tip: apply it 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): BGLMTB, FIN6453, BGwhielabel, BGflashlight, BG10OFFAFF1, BGLMX1L, BANGGOODSD, 6GSGIT, BGTorch4, 00c906, BGtorch3, BGAlerabat15, BGFW21C, BGtorch7
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Lumintop FW21 X1L Flashlight? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).