Aliexpress
Click here… to search for Xiaomi SHAMOOD Aromatherapy Diffuser 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 (45.43 USD): bgshOOp10
(CouponsFromChina.com tip: you should apply the coupon 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): BBAREO, BGDU39, vipupgrade8, BGHC20, 502C6B, BGHCB7
(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 SHAMOOD Aromatherapy Diffuser.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).