Use coupon and get Flashlight With 18650 for 20.99 USD (from Banggood). Basically copy coupon, view price history or create e-mail price alert. Best price?
Latest coupon code price check (UTC time):
Banggood (20.99 USD)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. Well, is it a good price anyway? Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever.
Link: Banggood product page
Price: 20.99 USD
20.99 USD – This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): FM1703, BGcharles03, BGd57765
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Astrolux ED01 Flashlight With 18650 Battery.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).