According to my DB the lowest price is $26.98 for CONVOY H2 LH351D Headlamp (in Banggood). Just check coupons out (with price alert and history). You probably want to know what is the best price?
Latest price update (UTC time):
Weight 160g, Illumination range Less than 50m, Lens Ar-coated glass, Color temperature 5700K/5000K/4000K/3500K/2700K, Mode 4 modes: 1%-10%-40%-100%, Switch type Electronic switch(with standly current), Lumens 800lm, LED 1* LH351D, Brightness memory Yes, Charging port Type-c charging (1A), Brand CONVOY, Reflector type Orange peel, Model H2, Material Aluminum alloy, Size 24.5x109mm (diameterx length), Waterproof IPX4, Battery 1x 18650 battery (not included)
Banggood ($26.98)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Well, is it a good price anyway? IMHO this is a good price, coz it’s lower than average ($27.57)
Link: Banggood product page
Price: $26.98
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGTorch4, FIN8276, 00c906, BG406d64, FIN1463, F03090, BGOutlight10, BG21a4ea, BG589b2e, BG8FORMULAMX, BGd57765
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for CONVOY H2 LH351D Headlamp.
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)).