Xiaomi Mi LYEJ02LM Bluetooth Headset White (Banggood, Aliexpress: Multifunctional On-cord Control / Built-in Mic / Bluetooth V4.1 HD Calls / Lightweight (the best price with coupon)).
Price history, coupons and price alert are available on this page. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($13.69): 13f142
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): 502C6B, TTxBG10, XM999, BGXMEE12, 2019SPEDM, aff7off, BG3CSUM, BGXMMIN, bgssaff9, AFfbG10, BGNEWEarphone, BG10OX, BGMT1X, BGCITYADS2019, BGVDay10%off, EARSP11, BGAFF10OFF, bGhOnEy10, BGIBUYILYV, BGXM18
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi Mi LYEJ02LM Bluetooth Headset ($-3)
2. Europe – Xiaomi Mi LYEJ02LM Bluetooth Headset [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Mi LYEJ02LM Bluetooth Headset White. The lowest price was: $5.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).