Just check coupons out (with price alert and history). What is the best price?
Pairing name: QCY-T12S, Use time: about 3 hours of talk; about 4 hours of music, Charges in the charging bay: about 3-4 times for both ears, Support protocol: HSP/HFP/A2DP/AVRCP, Compatible system: iOS/Android, Charging bay capacity: 380mAh, Charging interface type: Type-C, Communication distance: 10 meters (under barrier-free open environment), bluetooth version: 5.0, Product model: In2027, Product name: T12S
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):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($32.25): BG53e9c8
2. ($32.25): BGAlerabatKL
just apply this code in your 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/5cd
Old coupons (from the oldest to the newest): 13f142, BGBuscape01, BGBRPL2, BGHOTSHOP15
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for QCY T12S TWS Earbuds? There we go.
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)).