Just check coupons out (with price alert and history). Do you want to know what the best price is?
Cree XP-L, 1180 lm, 18600cd, 6000 – 7000K, Battery Quantity: 1x 18650 or 2x CR123A or 2x 16340, Mode Memory: Yes, Rechargeable: Yes, Waterproof Standard: IPX-8 Standard Waterproof
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 888dd4, P20R18, FLSTNE
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for FiTorch P20R Flashlight.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
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)).