Monster XKT01 Bluetooth Earphones (Banggood, Aliexpress: Charging Bin Capacity: 300mAh, Active Noise-Cancellation: No, Style: Half In-ear, Sensitivity: 109, Impedance Range: up to 32, Connectors: Type c, Earphone Battery Capacity: 30mAh*2, Charging Time: 1.5h, Color: Black, Brand Name: MONSTER, Frequency Response Range: 20 – 20000, Vocalism Principle: Dynamic, Model Number: XKT01, Communication: wireless, Charging Port: Type C, Charging Method: Charging case, Bluetooth-Compatible Version: 5.2, Music Endurance: 4-5h, Calling Endurance: 3-4h (the best price with coupon)).
You can create price alert here, copy coupons and view price history. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($28.97): BGAudio9
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/feV
Old coupons (from the oldest to the newest): BGAudio3
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Monster XKT01 Bluetooth Earphones. The lowest price was: $17.99.
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)).