If you’ve wandered the aisles of a bookstore, you know that book sizes can vary a lot. But did you know each book genre has a standard set of trim sizes? Plus, the trim size and final page count of a book contribute to the retail price of each book. These choices are made by the publisher when books are traditionally published, but if you self-publish your book you’ll be responsible for choosing the trim size for your book. Choosing the right trim size is determined by the genre of your book and a few other factors. For example, if…