I caught these guys in the action at Yongsan Station. I'd never seen something like this in action. I thought it was very organized of them to place the sticker rolls in order along the side as to not mistake the order. So many stairs, though. I suspect the first two stairs are sort of fun to unroll and apply, but by the 20th roll it gets old.
Here's another view of how many steps are at this train station. Yongsan is the electronics area of Seoul. Inside this building is not only a subway stop, inter-Korea train station, a movie theater, clothing stores, restaurants, a gigantic grocery store, but also a huge electronic mart where each floor specializes in a certain product. There's a camera floor, a computer floor, kitchen appliances floor and a phone/MPG player floor. It's pretty impressive and you can get quite the deal.