Aladin Used Bookstore Sillim is a secondhand bookstore in Sillim, Seoul, where you can buy and sell books. It sells a range of titles including textbooks, along with goods and stationery, and you can sell books you have finished and buy others. The store is on the second basement floor and has book search terminals and a reading area, with parking available for up to 1 hour 30 minutes. The entrance is not inside the building but through an external entrance on the right, which can make the route confusing at first.