Yes! If your book is eligible for Print On Demand Distribution, you can add the service directly from your bookbaby.com account. After logging in, click Manage/Reorder My Books, then click Add POD Distribution next to the book you want to distribute. You'll be prompted to select a quantity of author copies to include in the order (Print On Demand Distribution is available with any order of 25 or more copies), and then you'll proceed to checkout.
If you don't see the option to add Print On Demand, it might still be possible. Please give us a call (877-961-6878) or email (support@bookbaby.com), and we'll help you get set up.