Value for money
cheap wallpaper can be misled without explaining the roll size to the buyer. below is a good guide for popular fair market value when you want to buy wallpaper in nigeria
korean wallpaper per roll (15.6m x 1.06m =16.5sqm) i
european or chinese wallpaper per roll (10m x 0.53m=5.3sqm)
as you can see from the above comparison, european/chinese wallpaper seems cheaper but the size for each roll is 3 times lesser than korean wallpaper. hence korean wallpaper is about 30% cheaper than most european or chinese wallpaper and highest quality you can get, as a package.
wallpaper hangers prefer to install korean wallpaper as it is wider (1.06m) that requires less joining and matching repeated patterns to complete covering a wall. the end result will produce lesser unsightly joint.