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,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. Korean wallpaper more economically viable than painting your wall in every 3-5 years as korea wallpaper in Nigeria climate can last up to 10 years.
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.