Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – KZ ZST Earphones No On-Cord Control (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (17.51 USD): aff7off
(CouponsFromChina.com tip: you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – KZ ZST Earphones No On-Cord Control (-3 USD)
Price history and price alert
Check out price history chart (for all/most countries) for KZ ZST Wired On-Cord Control Earphones.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).