Aliexpress
Click here… to search for Xiaomi Soocas Toothbrush Case on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (4.43 USD): Home26
Coupon (5.33 USD): vipupgrade8
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Soocas Toothbrush Case? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).