Go down and check coupons out. Remember to check price history if it is available. Best price?
Capacity 320ml, grey, Material 304 stainless steel, Weight 257g, Size 68x 162mm / 2.68x 6.38inch, Insulation efficiency More than 40℃ 6 hours, Color Pink, PP
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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($23.16): BGTY704CP
just apply this code 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): BGXM29, BGOD1, AFfbG10, 0e7f33, FBCOUPON1, BGCAMP01, BGZPBC15, BGCuponation10
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Xiaomi Jordan Judy 320ml Vacuum Cup is here.
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)).