A copy of the Constitution can be purchased online at Amazon.com. The most popular version of the Constitution on Amazon.com is the "Pocket Constitution Edition." It is also possible to purchase a replica of the Constitution on Amazon.com by searching for "U.S. Constitution Antiqued Replica."
Constitution Facts also sells copies of the Constitution. Each copy comes with historical facts about the creation of the document as well as how the Supreme Court has interpreted the Constitution since its creation. Constitution Facts offers the book for free, but they require buyers to send them a check or money order for $3 to pay for shipping and handling.