Are there renewal fees for ISBNs?

Cost structure

How Do I Select an ISBN package?

Understanding the Differences Between Self Publisher and Publisher Package ISBNs

How many ISBNs do I need?

Determining the number of ISBN assignments a self-publisher requires.

What is an ISBN

Overview of International Standard Book Number

What is an imprint?

Publishing definition of imprint and it's significance for Amazon

What is the difference between a LCCN and an ISBN?

ISBN vs. LCCN: What’s the Difference?

What's the Benefit of Using Authentic ISBNs Instead of the Free ISBN from Amazon?

The limitations of ISBNs not in registered in your name

Why buy an ISBN?

The importance of an authentic ISBN