People often buy new things and each time they do, their belongings pile up. With this, either they give away worn-out items or discard them. However, people realized that they could find a profitable means of selling used goods through the emergence of online second-hand markets. Seeing the profitability and satisfaction this brings, more and more people around the world began joining this activity and now it has become a regular venture. *The Granite Tower* (GT) conducted a survey on 124 Korea University (KU) students to gather information regarding their satisfaction with second-hand goods because students these days actively use online platforms to trade used merchandise.