Go down and check coupons out. Remember to check price history if it is available. Best price?
Vacuum Pressure: -30kPa, Charging Time: 2 Hours, Full Electric Working Time: 25 times (blender head) 200 times (vacuum head), Whipping Head Material: 301 Stainless Steel, Capacity: 300ml, Rated Voltage: 7.4V (blender head) 3.7V (vacuum head), Cup Material: ABS+PC, Suction: 880 – 1300Pa, Power: 30W
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($71.71): BG1111KA
2. ($71.71): BGBFKA
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHOMEAPP, BGZHJUI, bGhOnEy10, BGZMJCU, 7d18f7, BGSS10%SW, bgshOOp10, BGHome15%, BGHOMEAPP13, BGHOMEA13, 13f142, BG10OFFAFF, BGwhielabel, BGYY001, BG10OFFAFF1, BANGGOODSD
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi ZHENMI Mini Wireless Vacuum Juicer Cup.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).