You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Charging port USB Type-C, Audio codec SBC / AAC, Driver 13 mm dynamic, Calling ENC (Environment Noise Cancellation Technology), Charging box Charging box: 44.1*40.5*25mm, Color Ceramic White / Rock Red / Cosmic Black, Battery Life “AirBuds U: Up to 5 hours of listening time with a single charge Up to 4 hours of talk time with a singel charge AirBuds U with charging box: Up to 24 hours of listening time Up to 20 hours of talk time”, Brand model UMIDIGI Airbuds U, Weight about 30g, Sweat and Water Resistant Sweat and Water Resistant: IPX5 (earphones), bluetooth version BT 5.1, Charging time 2 hours, Effective bluetooth range 10m (open space without obstacles), Earphones 35.43*20.38*16.91mm, Frequency response range 10 Hz – 10 kHz
Banggood
Banggood warehouse is located in Hong Kong. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: $-3
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG4ea068, BG6fffd9, BGAUDIO, BG9ba0e8, BG6de015, BG1b5830, BGAudio3
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for UMIDIGI AirBuds U Bluetooth 5.1 Earphones ENC.
Price records source(s): 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)).