Size EU40-44, Color Black /White, Product name Sports running shoes, Upper material Flying woven surface+full of stars (reflective yarn), Brand Xiaomi Mijia, Sole material Polyurethane ETPU + rubber.
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.
Updated:
Banggood
Warehouse in China.
Link: Xiaomi Mijia Sneakers 4 Running Shoes
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Price history (for all/most countries) for Xiaomi Mijia Sneakers 4 Running Shoes is here. The lowest price was: $49.99.
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)).