Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi K-Song Headphones (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (62.89 USD): BGLOAC1
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): 502C6B, 12XMBH, e2bcea, aff7off, TTxBG10, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, EARSP11, BGAFF10OFF, BGMPB2020, bGhOnEy10, 7d18f7, BGSS10%SW, bgshOOp10, Email5, BGELIG0920, BG11SHOP, BG11PP7, BG4BW25, 13f142, BGa0b145
(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. China – Xiaomi K-Song Headphones (-3 USD)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi K-Song Bluetooth Headphones? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).