Dongmun Market 東門市場 동문시장
A tradition market where you can find fresh seafood, fruit, kimchi, meat, souvenirs, etc.
Lotte Mart 롯데마트
제주특별자치도 제주시 노형동 708번지
제주특별자치도 제주시 삼도2동 1259번지
E-mart is generally cheaper than Lotte, but products are usually in family size.
Seogwipo Everyday Olle Market 서귀포매일올레시장
제주특별자치도 서귀포시 서귀동 277-1번지
There are fresh seafood, fruits, meats, dried seafood, kimchi, cooked snacks and other kitchenware being sold.
I guess this could be the street in Seogwipo city which has the most skincare and fashion stores.
Home plus 홈플러스
제주특별자치도 서귀포시 동홍동 1560-1번지
This is a discount store owned by Samsung and Tesco. There are home products, electronics, clothes and a large supermarket.