Just check coupons out (with price alert and history). What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Cree XM-L2 U2, 940lm, 6500-7000K, 18650 battery, Memory mode, White light
Price history and price alert
Here is price history (for all/most countries) for Convoy S2+ CW Flashlight [Fast-08].
Price records source(s): Gearbest
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You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).