Test preparation takes a variety of forms, including individualized instruction, mass-market books and Internet-based practice tests.
Harper's new line of mass-market books is scheduled to begin publishing in January.
A question arises, as it so often does in the world of mass-market books: Who are these people?
The book will cost $7.95, almost a dollar more than even the highest-priced mass-market books usually do.
Likewise, people who like mass-market books keep buying new beach-and-airplane books.
The reason is that mass-market books no surprise tend to sell in larger numbers than trade.
Penguin said it would raise prices next year on all its mass-market books, but by just 4 cents a book.
That is one reason more publishers are seeking a presence in mass-market books.
The shift in attitude about the summer is in part a sign of the influence that mass-market books have had on general trade publishing.
The first mass-market book about running, it is considered to have helped start the fitness boom.