Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BlitzWolf BW-HP0 Pro Bluetooth Headphones [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (14.99 USD): BGHPP2
Coupon (15.99 USD): BGHPP1
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BG23801, BGLIVEHP0, BG4BW25, BGHP0P9, BGLOAC1, BGHP0P27, BGHPES, 10%ForBGBW, BG2bb6ec, BGHP0PES, BG4f644f, BGa0b145, 13f142, BG7HPP, BGbrhp0p, BGde80e8, BG30bb90, BG55F1B9, BGBuscape01, BGABB11F, BGHOTSHOP15, BGCZHP, BG53e9c8
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BlitzWolf BW-HP0 Pro Bluetooth Headphones [EU] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for BlitzWolf BW-HP0 Pro Bluetooth Headphones.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).