Basically copy coupon, view price history or create e-mail price alert. Best price?
XP-L HD V6 3D, 4750K-5000K, Neutral White, 4x 18650 or unprotected button top (not included), 3-4.2v, 50, 000+ cd, 5000+ lumens, 450+ meters (max), IPX-8 waterproof
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.
Link: Banggood product page
1. ($44.99): BGBLFQ8
2. ($65.24): AC18
3. ($65.24): BGSM30%
4. ($65.24): BGSPR
5. ($65.24): m4x2020
6. ($73.39): CFCBG
7. ($73.39): BGAFF10OFF
8. ($73.39): bGhOnEy10
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 72b445, XMASBG, BGQ8, AFfbG10, MUS8Q, M4DQ8, BGBFCR41, FMBG, FBL8Q, BGQ870, BGQ850
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BLF Q8 Flashlight [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for BLF Q8 Flashlight? There we go.
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)).