A 부자 is a rich person. In Chinese characters (한자), 부자 is written as 富者. The left character means rich or abundant, while the left refers to a person. Judging by how hard people work in Korea and how hard students have to study to get into a good university, I think it’s safe to say that Koreans really love 돈 (money). And if you want to get rich, then this is obviously the supermarket you should be shopping at (as I recall, I took this picture near the 신설동 area of Seoul). By the way, the word 슈퍼 appearing in the sign is the Konglish word for supermarket.
Here’s a bonus shot of an ad I saw on a train. A young Korean man appears on the cover of the fictional Richest magazine.