Advanced reader copies or "ARCs" are produced as a means of advertising books. These editions are given to various reporters and book reviewers in the hopes of promoting the book. When it comes to Harry Potter advanced reader copies, there are low numbers of this book in production, and finding an ARC in very good to fine condition is difficult as at first the book wasn't well known. Furthermore, ARCs were only produced for the first three Harry Potter books owing to the fact that the book grew in popularity by Goblet of Fire.