Aliexpress
Click here… to search for Jetbeam WL20 Flashlight on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (104.98 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): 2d9c6e, FLSTNE, 121d63, BGTBFL, bgtbfl, MJT2W, BGAAXX, BGBFCR41, JT201920, BGTORCH, FINO1902, bGhOnEy10, BGTBD, BGflashlight, BG10OFFAFF1, BANGGOODSD, BGTorch4, 00c906
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Jetbeam WL20 Flashlight is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).