You can get Pro 2842m for 348 USD using coupon code (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is best price?
Latest coupon code price check (UTC time):
Banggood (348.00 USD)
Banggood warehouse is located in China. You probably want to know if this is a good price. It’s a good price, isn’t it? The average is 360.80 USD. There’re 3 active coupon codes available! Awesome!
Link: Banggood product page
Price without coupon: 380 USD
Coupon (348.00 USD): BGMarco18
Coupon (368.00 USD): BGSPRING8OFF
Coupon (368.00 USD): BGHONEYSP
(CouponsFromChina.com tip: apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BGCOUPERT8, BGCAPITALOS8, BG8FORMULAMX, BGcharles03, Fla222, BGd57765, BGNEWYEAR8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for Weltool W5 Pro 2842m 990lm LEP Flashlight on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Weltool W5 Pro 2842m 990lm LEP Flashlight is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).