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.
Aliexpress
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Here are coupons that you can use.
Updated:
Banggood
Warehouse in China.
Link: Xiaomi Gamepad Dual Mode Bluetooth Game Controller
$26.99 with coupon: BGacd2d7
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Gamepad Dual Mode Bluetooth Game Controller? There we go. The lowest price was: $26.99.
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)).