Aliexpress
Click here… to search for Xiaomi 240lm LED Flashlight on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (20.21 USD): BGAFF10OFF
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): 4cfbd8, 6335CK, AC18, BGBFCR41, AC19
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for Xiaomi 240lm LED Flashlight is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).