XP-G3 (6000-7000K), 2023lm, 1x unprotected 18350/16340/18650 battery (not included), 19850cd, IPX-65 waterproof.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($46.02): BGAlerabat15
2. ($46.02): BGtorch7
3. ($48.73): BGtorch2
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): ECFKMS42Sc, e2bcea, ECFKL, BGBFCR40, AXMAS, BGAB20, BGASTROLUX, BGAST25, BGAFF10OFF, BGCuponation10, 4BLF, BGHONEY2110, BG10OFFAFF, BGwhielabel, BGflashlight, BG10OFFAFF1, BANGGOODSD, 6GSGIT, BGTorch4, 00c906, BGXMAS58, BGtorch3
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Astrolux S42S Colored 219C Flashlight ($-3)
Price history and price alert
Price history (for all/most countries) for Astrolux S42S Colored XP-G3 Flashlight is here. The lowest price was: $32.7.
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)).