Because we are on online only site we can't keep inventory of everything. If there is a book that you would like to purchase with no current inventory, you can purchase the book, we will place your order, and you should receive the book within 5-7 business. If a book is out of stock with the publisher or on backorder, receiving your book may take a bit more time. If it says to contact the bookstore for availability, you can reach us at orders@sweetsparrowbookstore.com