According to my DB the lowest price is $27.06 for Convoy H1 XML2 Headlamp (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is best price?
Color Temperature: 4200K / 5000K / 6500K, 1046LM, 18650 Battery
Latest price update (UTC time):
Banggood ($27.06)
Banggood warehouse is located in China. I have no active coupons for you right now. Low/high price? From what I can see this price is higher than average price ($23.14).
Link: Banggood product page
Price: $27.06
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGH1, EYBG, BGDLH1, eybg, BGTORCH, BGCH1, 502C6B, BG309d35, FIN1445, F03084, BGOutlight10, BG589b2e, 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
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 Convoy H1 XML2 Headlamp? There we go.
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)).