Is it expensive to live there and buy things (groceries, clothing, etc.)?
No, it is not expensive to live in Korea. What you buy, though, naturally can be more or less expensive depending on where you buy it. Groceriessuch as fresh produce, cereals, meat, and dairy productstend to cost slightly more in Korea than in the United States, for example. However, fresh vegetables and fruits can be cheaply purchased at roadside stands and open market vendors. Good quality clothing can be purchased for very cheap prices (as low as $5 per top or $10 per bottom), whether at textile and clothing markets such as Namdaemun or Dongdaemun in Seoul or chain stores all across Korea. Larger sizes can be difficult to find, however, and therefore may cost more in areas that cater to foreigners, such as Itaewon in Seoul. International retailers such as GAP, UNIQLO, and Giordano carry a wider range of sizes than Korean stores for reasonable prices, and you can also find luxury names at department stores such as Lotte, Hyundai, or Shinsaegae. The cost of luxury items are equally if