Just check coupons out (with price alert and history). What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Mijia New gamepad, dual-mode Bluetooth connection, with joystick and 6-axis gyroscope, linear motor, multi-system support | $49.30 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Brand: XIAOMI, Model: XMG20SYM, Connection method: Wireless receiver/Bluetooth/Wired, Port: Type-C, Battery specification: 830mAh lithium-ion battery, Input: 5V=1A, Working Temperature: 0~45C deg
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($26.99): BGacd2d7
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): BG404d6b, BG8FORMULAMX
(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 Xiaomi Gamepad Dual Mode Bluetooth Game Controller.
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)).