I felt sticker shock when I saw the price of the coffee.
sticker shock
idiomDisgust, shock, or fright upon learning the price of an item offered for sale.
Origin
first recorded 20th c.Coined c. 1981, in reference to price stickers affixed to items for sale.
Many shoppers experienced sticker shock when they saw how much the new electronics cost this year.
Upon reviewing the architect's final estimate for the home renovation, the couple suffered from severe sticker shock and immediately requested a more modest proposal.