When to use great deal (slang) in Korean
Korean: 혜자[ hye-ja ]

When to use it
(혜자) is slang for something that gives you a lot for the price, so it feels like a great deal. People often use it for food, sets, tickets, or stores when the amount or quality is better than expected. It is a casual word, so it is best in everyday conversation with friends.
Example sentences
집 앞 편의점 도시락은 진짜 혜자야.
The lunchbox at the convenience store near my house is really a great deal.
학교 식당 오늘 메뉴는 혜자예요.
Today's school cafeteria menu is a great deal.
이 카페 세트는 싸고 양도 많아서 혜자네.
This cafe set is cheap and gives a lot, so it's a great deal.
시장 과일 한 박스가 정말 혜자였어요.
The box of fruit at the market was really a great deal.
친구가 이 축제 표가 혜자라고 했어요.
My friend said this festival ticket is a great deal.
여행지에서 찾은 숙소가 혜자였어요.
The place we found to stay on the trip was a great deal.