Aliexpress
Click here… to search for Xiaomi BRE02JY Dual Drivers Earphones Black Type-C on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): b7a27d, 06f47b, 6baf92, e2bcea, TTxBG10, aff7off, 2019SPEDM, BG3CSUM, bgssaff9, AFfbG10, 502C6B, BGHKHK, FBCOUPON1, BGXM722A, BGLOAC1, 13f142, BGa0b145, 6GSGIT, BGBRPL2, BGHOTSHOP15, BG53e9c8, BGAlerabatKL, BGd173b4, BGAudioVideo, BGAUDIO, BG9ba0e8, BG1b5830, BGAudio3, BGAudio9
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Xiaomi BRE02JY Dual Drivers Earphones Black Type-C is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).