The phrase represents a specific product and its availability through a major bookseller. It denotes the graphic novel Batman: The Long Halloween and its presence as a purchasable item at Barnes & Noble retail locations and online. For instance, an individual might search the phrase to determine if the book is in stock at their local store.
The availability of a popular graphic novel like this at a large retailer is significant because it increases accessibility for a wider audience. This accessibility can drive sales, raise awareness of the character and story, and potentially introduce new readers to the comic book medium. Furthermore, it connects a modern story with the legacy of a bookseller.