Just check coupons out (with price alert and history). What is the best price?
ZBR-MKF 2.4G Wireless Lavalier Microphone Mini Portable Transmitter Receiver Mic 360° Sound Pickup Intelligent Noise Reduction for Live Broadcast Streaming Recording – Type-C
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($5.64): BGAudio9
you should apply the coupon 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): BG58d022, BG1b5830, BG65182b, BGAudio3
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for ZBR-MKF 2.4G Wireless Lavalier Microphone? 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)).