Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (36.75 USD): PICODICOM
(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): BGJSZ22, AFfbG10, BGKT29, BGKT3566, BGSOLJC, BGBFAFF2019, BGCITYADS2019
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi SOLOVE Z2 Electric Portable Juicer Cup 400ml.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).