What is the difference between Custom Cover Design and Custom Cover Illustration?

Our standard publishing packages include Custom Cover Design done by one of our graphic designers. We will allow authors to provide their own images or photographs or they can have designers use images or photographs from our stock image site. (Please note that if they don’t own the images they provide, they need to secure a written permission for these images from the owner.) Your Custom Cover design can have 1 image from our stock image site for free. Additional images will incur additional fees. You may also use any of the interior illustrations we have created as your book cover. The only limitation is that there is a chance that a stock image used on your cover may appear in some other print media as it is available for multiple users.