Trustfire MC12 XP-L HI Headlight (Banggood, Aliexpress: Lumens 1000lm, Waterproof IPX8, Model MC12, Candela 2756cd, Size 65×20.6mm, Lighting time 160h, Lamp beads XP-L HI, Irradiation distance 105m (the best price with coupon)).
Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($35.64): BG10OFFAFF1
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGTORCH, M2173, bGhOnEy10, FIN2173, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGFLS15, 7d18f7, BGAFF10OFF, BGCuponation10, 4BLF, BGTFMC12, BGMC12RU, BG10OFFAFF, BGwhielabel, BGflashlight
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Trustfire MC12 XP-L HI Headlight. The lowest price was: $19.99.
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)).