Go down and check coupons out. Remember to check price history if it is available. What is best price?
Battery Capacity 3000mAh, Product Light Mode Main Button：ON – OFF, Product Size 185x 43 mm (Lengthx Head diameter), Product LED Light source LED P90 Lamp bead, Product Application Hunting / Hiking / Fishing / Emergency / Camping / Outdoor / Self Defensive, Model A500, Product Power Source 1/2*18650 rechargeable( special battery /other 18650 cann’t use), Product Function Attack Head / Self-Generating / USB Charging, Side Button：High – Mid – Low （Double click to turn on super bright and long press to turn on burst flashLong）, Product Material Aluminum Alloy, Product Brightness Max 2800 lumen
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($28.70): BG10OFFAFF1
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAFF10OFF, BGCuponation10, 4BLF, BGHONEY2110, BG10OFFAFF, BGwhielabel, BGflashlight
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Warsun A500 XHP90 Flashlight Long Version ($-3)
Price history and price alert
Here is price history (for all/most countries) for Warsun A500 XHP90 Flashlight Short Version.
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)).