Aliexpress
Click here… to search for Convoy L8 SBT90.2 Flashlight 6400lm Flashlight on 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 (105.59 USD): BG8Alerabat
Coupon (105.59 USD): BGLED07
Coupon (105.59 USD): BGOutlight10
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BGtorch3, FIN5564, BGCVL8, BGCVL8A, BGCVL8B, BGAlerabat15, BGtorch7, BGAlerabatI, FIN1500, BGtorch9
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Convoy L8 SBT90.2 Flashlight 6400lm Flashlight is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).