Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (59.00 USD): BGL20C
Coupon (66.90 USD): AC18
Coupon (66.90 USD): m4x2020
Coupon (66.90 USD): BGTBD
Coupon (68.58 USD): F7BG
Coupon (75.27 USD): CFCBG
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): brandlmt, 705589, 1b33ed, MLP2C, M4BG, FMBG
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Lumintop ODL20C Flashlight.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).
None of these are valid!
All of these codes are valid right now. How did you check the codes? You should paste them in the cart