Just check coupons out (with price alert and history). 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):
Nichia 219C: 5000K, 53960 CD, 12000 Lumens (XP-G3) (tested with 4×18650), 2x 18650 or 4x 18650 battery (not included)
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($87.96): m4x2020
2. ($87.96): BGTBD
3. ($87.96): BGSM30%
4. ($90.16): BG1128
5. ($98.95): BGAST25
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGMF01, AC18, CFCBG, BGXFK, BGAMF01, ac18, MMF01, M4BG, F7BG, BGF1111, BGBFCR40, BGBF19, BGX656, AXMAS, fInbG2020, BGff2020, BGASTROLUX
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Astrolux MF01 XP-G3 Flashlight ($-3)
Price history and price alert
Price history (for all/most countries) for Astrolux MF01 219C Flashlight is here.
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)).
