Just check coupons out (with price alert and history). Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Connectivity: Wireless, Frequency response: 20Hz – 20KHz, Impedance: 32ohms, Music Time: 4h, Sensitivity: 92dB, Standby time: 6h, Talk time: 2.5h
Price history and price alert
Here is price history (for all/most countries) for i9s TWS Airpods Style Earphones.
Price records source(s): Gearbest
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)).