Product Name: Drinking Cup, Material: 304 stainless steel, Capacity: 500mL, Product Dimension: Mouth size: 9cm / Bottom size: 6cm / Height: 12cm.
You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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 Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK. Well, there is one coupon available right now.
Link: Banggood product page
1. ($14.85): 8BGwbg2204
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $14.85.
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)).