$21.71 – Convoy T4 SST20 Flashlight (Banggood, Aliexpress: Tailstand Yes, Required battery type 2*AA or 2*14500 （not included）, Lens type Light-green coated glass lens, Max flux (@3000mA) 650LM, Battery included No, Length / head diameter / tube diameter 153.3mm / 27mm / 21mm, LED SST20, Net weight 98g, Reverse polarity protection NO, Low voltage warning Yes(14500) / No (AA), Mode memory Yes, Gross weight 110g, Reflector Orange face light cup, Material Aluminum Alloy (the best price with coupon)).
You can get Convoy T4 SST20 Flashlight for $21.71 using coupon code (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood ($21.71)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Good or bad price? Good price! It’s lower than average one ($22.94)!
Link: Banggood product page
Price: $21.71
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGAlerabat15, FIN6910, BGtorch7, BGtorch2, BGAlerabatI, BGcharles03, BGd57765
(these codes were not working in latest coupon update, but you can check them out anyway)
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
Here is price history (for all/most countries) for Convoy T4 SST20 Flashlight. The lowest price was: $20.82.
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)).