Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Atuman Small Q Electronic Ruler Xiaomi Youpin | 15.35 USD | – |
 |
Xiaomi DUKA Small Little Q Electronic Ruler | 16.00 USD | – |
 |
Xiaomi YunMai Wrist Ball | 16.60 USD | – |
 |
Xiaomi DUKA Small Little Q Electronic Ruler | 16.97 USD | – |
More on Aliexpress… Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
Coupon (273.13 USD): 7d18f7
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): Email5, bgshOOp10, BG11SHOP, BG11PP12
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for Xiaomi All in One VR 954inch 1080P 4K is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).