$8.85 – P20 5W LED Diving Flashlight 300lm (Banggood, Aliexpress: P20 5W LED Diving Flashlight 300LM Lantern Aluminum Alloy Waterproof Underwater Scuba Flashlight Torch Lamp (the best price with coupon)).
ATM you can buy P20 5W LED Diving Flashlight 300lm for $8.85 (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
Latest coupon and price update (UTC):
Banggood ($8.85)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). But wait a sec… Is it a good price? Hmmm, price is higher than average (which is $8.74 right now), so better set price alert down below…
Link: Banggood product page
Price: $8.85
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for P20 5W LED Diving Flashlight 300lm? There we go. The lowest price was: $8.49.
Price records source(s): 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)).