transparent Pc and ABS, Mini plug: stainless steel and food grade silicone, Powered by 4x AA dry battery (included), Bottle opener: stainless steel, Inverted decanter: stainless steel and food grade acrylic, Cut tin foil knife: stainless iron and ABS.
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($57.62): vipupgrade8
this code has to be applied in your 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
Price history (for all/most countries) for Xiaomi CIRCLE JOY 4-in-1 Wine Set is here. The lowest price was: $38.24.
Price records source(s): Gearbest, 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)).