What's the right trim size for the book?

To get the most for your money, choose a standard trim size such as 5½ x 8½, 6” x 9”, or 8½ x 11. For example, a 7” x 9” book would be priced at the larger 8½” x 11” size and trimmed down to 7” x 9”.  The size of a book can depend on its subject matter. A short column width makes the book very readable and easy to handle, ship and display. 8½” x 11” is a better size for books with many photos, double columns or illustrations. Landscape formats (books bound on the short side) cost more than standard portrait sizes.