You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
3.7V Charging Time (h) 1-2h Talking Time 2-3h Standby Time (h) 70h, Microphone Yes Bluetooth Version V5.0 Transmission Distance 10m Receive Sensitivity 108dB Impedance 32ohm Frequency Response 20-20kHz Battery Capacity Charging box: 750mAh, 3.7V Single ear: 40mAh
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
1. ($30.59): bgshOOp10
paste coupon code in your cart and click Apply 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): e2bcea, TTxBG10, BG20QCY, BGss506, AFfbG10, BGBLACK04, BGQCYT1PRO, BGVDay10%off, EARSP11, BGT166, BGPRO033, BGAFF10OFF, bGhOnEy10, BGSS10%SW
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for QCY T1 PRO TWS V5.0 Earphones Black.
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)).