POB stands for "Pre-Order Benefit" and is a term used in the K-Pop community to refer to limited edition items that come with a pre-ordered K-Pop album. POBs are exclusive and different from the normal inclusions that come with the album, such as photocards, postcards, posters, polaroids, bookmarks, stickers, holographic or lenticular cards, and photobooks. POBs can be a single member/group card or a full set, and they are usually physical items such as a photocard, poster, or postcard. POBs are highly desirable among K-Pop fans and collectors, and they are often traded and sold on marketplaces. Stores that hold pre-order events with POBs get exclusive photos from the artists company that they can use on the photocards. POBs tend to be more expensive than album photocards, and certain limited edition album merchandise can go for as high as $1000.