When traditional book companies publish a book, they pre-purchase thousands of books, and due to the large quantity of books they have printed up front they will also get massive discounts from the printing factories. This allows them to sell them at a much lower price overall on both their own websites and other distributors.
All books published through Nicolesy, Inc. are self-published and available as print-on-demand purchases through both Blurb and CreateSpace (Amazon.com). This means that the distributor prints the book after you make your purchase. My company is very small and it is not possible to pre-purchase hundreds (or thousands) of books, store them, and then ship them myself. Even though the prices of both the eBook and print book may be similar, there are much higher manufacturing costs involved with creating a physical book.