Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
More on Aliexpress… Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (245.99 USD): BGAudio9
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGAUDIO, BGeb649d, BG1b5830, BGSaleFeb8, BGSaleAD, BGAudio3, BG2c1cf9, BGAUGUST8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for Xiaomi Buds 4 Pro Bluetooth 5.3 Earphones is here.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).