Just check coupons out (with price alert and history). Best price?
IR light: 4pcs 850nm, Model: FJ02MLWJ, Aperture: F2.0, System: Android 4.4 or iOS 9.0 or above version, Lens angle: 105°, Battery: AA LR6 1.5V, Working temperature: 0 to 45℃, 433MHz RF, WiFi conenction: Wi-Fi, Resolution: 1280*720P, Name: Xiaomi Video Doorbell, Executive standard: GB/T 31070
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Mijia Wireless Smart Cat-eye 720P 161 FHD Video Doorbell 5inch Touch Screen AI Face & PIR Movement Detection Mi Home APP | $160.02 | – |
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. Well, there is one coupon available right now.
Link: Banggood product page
1. ($56.12): BGd0b05d
this code has to be applied 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): BGXMDB, AFfbG10, BGVDay10%off, bGhOnEy10, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 13f142, BGHONEY2110
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi AI 720P Doorbell.
Price records source(s): Gearbest, 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)).