“Unopened” in book terms refers to any book that has never been read or otherwise utilized; typically, all pages remain undamaged without signs of wear.
No one knows why someone would wish to buy an unopened book, perhaps as an assurance they are getting something brand new; others enjoy keeping their books as new and untouched as possible, making an unopened one the ideal addition.
No matter the motivation, unopened books certainly have their market. Although not as readily accessible as previously read titles, unopened titles can still be located if you know where to search.
Unopened books also referred to as new, have yet to be read and provide readers with new knowledge or entertainment that has not previously been experienced. Unopened books also greatly support authors or publishers since these new purchases help support both. Finally, unopened books make great presents, allowing the recipient to discover something different while supporting an author/publisher!
Keep books unopened to preserve their value and prevent damage to ensure their best value and loss in sales value. Opening books exposes them to creasing, tearing, and other forms of wear that reduce their value significantly and may result in lost pages that make selling impossible, so book collectors or those seeking to resell should always prefer unopened volumes as long as possible.