Living in Seoul (South Korea) is quite expensive if you don't know where to buy things. For most of the stuff you need in your house, you can buy them online (GMarket, Coupbang, 11st etc.) which will give you a lot of discounts. But, if you want to touch the goods before buying them, visiting the Dongmyo Flea Market may be a good option. Locating near the Dongmyo station, Dongmyo Flea Market opens at 2pm on weekdays and 10am on weekends. They close before sundown and on every 2nd and 4th Tuesday. Basically, you can find everything you need from clothes to household goods with the price ranging from 1,000 won to 100,000 won (most of them are cheap). You can even find vinyl records here. Not sure where did he get all these things?