YES24 Junggo Seojeom Mokdongjeom is a used bookstore where customers buy and sell secondhand books, located at Exit 1 of Omokgyo Station on Line 5. The store also carries records and media goods, and a cafe inside sells coffee and simple desserts. It opens at 9:30 a.m. and has seating for reading and one hour of free parking. New products outnumber used books.