Aliexpress
Click here… to search for Xiaomi Fizz Multifunctional Office Table Mat on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (20.45 USD): Terence
Coupon (20.45 USD): 2203ActiesNL
Coupon (20.67 USD): BG00c906
(CouponsFromChina.com tip: apply it 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): TTxBG10, BGFizzBox, bgssaff9, AFfbG10, BGCITYADS2019, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BGdragonBoat, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, 6GSGIT, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Fizz Multifunctional Office Table Mat.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).