Aliexpress
Click here… to search for KZ-ATE Earphones on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (13.49 USD): BG4BW25
Coupon (13.99 USD): 13f142
(CouponsFromChina.com tip: this code has to be applied in your cart 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): 15earbud, TTxBG10, BG3CSUM, AFfbG10, 502C6B, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, EARSP11, BGAFF10OFF, bGhOnEy10, BG20HP, BG20CES, bgshOOp10, BGELIG0920, BG11SHOP
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for KZ-ATE Earphones is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).