Good news! Shattered is now available to pre-order in both hardcover and e-book formats! To make it easy for you, I've put all the links below. :)
BTW in case you were wondering, pre-order is not "pay now, read later." Amazon, etc. will not charge you until the book has shipped. So there's really no downside to pre-ordering!
Why do authors want readers to pre-order? It shows the retailers and the publisher that there is a demand for this title. That readers are excited about its release. A good pre-order can mean a larger print run (more copies!), better distribution to more bookstores, and a bigger marketing budget for the author - maybe even a tour to a city where there's been high pre-orders.
So yeah! All good things! And for readers you often get a better price than if you wait until the book is released. Amazon, for example, offers a pre-order guarantee. If the book gets cheaper after you pre-order it, they'll refund your money. I've gotten great discounts on books this way.
Have I convinced you to take that pre-order step? :) They way I look at it, if you're going to get the book when it comes out anyway, why not?
Barnes and Noble (hardcover)
Barnes and Noble (Nook)
Book Depository (Free worldwide shipping!)