If a book’s title is displayed as a link, that book is
available for preorder. This means that you can order it now, and
the book will be sent to you when its published. And thanks to Amazon’s
preorder price guarantee, you get the lowest price that Amazon posts between
when you order and when the book ships,If you order books with different release dates, you can choose to have
your shipment delayed until the last book is published, or you can pay
a little more in postage expense and have each book shipped on its release.