I have just checked coupons. The lowest price I could get is 21.1 USD for Astrolux C8 3A 5500K Flashlight (in Banggood). Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (21.10 USD)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. Good or bad price? From what I can see this price is higher than average price (19.52 USD).
Link: Banggood product page
Price: 21.1 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 24b777, c8834b, BGLF1, AC18, BGAC8, BG7C8, BGSC8, MALTC8, M4BG, BGBFCR40, 2019FG, AXMAS, BGSPR, BGASTROLUX, BG1128, BGAST25, cbrIDgTec, BG10OFFAFF1, BANGGOODSD, BGTorch4, 00c906, BGtorch3, BGAlerabat15, BGtorch7, BGtorch2, BGAlerabatI, BGASTC, BGtorch9, BG8Alerabat, BGLED07, BGOutlight10, BGXIFD367, BG589b2e, BGcharles03, BGd57765
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. China – Astrolux C8 1A 6500K Flashlight (21.6 USD)
2. China – Astrolux C8 3B 5000-5500K Flashlight (21.1 USD)
3. Europe – Astrolux C8 XP-L HI Flashlight [EU] (-3 USD)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Astrolux C8 3A 5500K Flashlight? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).