If you still have some room on your walls you might consider buying this Bangtan Boys photo posters set. You will get 12 different glossy paper posters with your beloved group. The size of each one is 30 cm x 42.5 cm (11.8 inch x 16.8 inch). As a bonus you will get on sheet of BTS photo stickers.
You can become the owner of this awesome set for just $19.50.