Aliexpress
Click here… to search for Xiaomi TS STR015-0105 Ice Blue Sunglasses on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (20.49 USD): BGSMB5
(CouponsFromChina.com tip: just apply this code 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): ba388e, 502C6B, e2bcea, 715bfc
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi TS STR015-0105 Ice Blue Sunglasses.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).