Aliexpress
Click here… to search for Xiaomi FREETIE Memory Cotton Men Sneakers Insoles 40-44 on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (7.56 USD): BGRSHOES
Coupon (8.22 USD): BGCS5227
Coupon (8.50 USD): BGAFF10OFF
(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): AFfbG10, BGFTIS59, 502C6B, bGhOnEy10
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi FREETIE Memory Cotton Men Sneakers Insoles 40-44.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).