Elizabeth Eisenstein's "Divine Art, Infernal Machine"

The book by Elizabeth Eisenstein, "Dvine Art, Infernal Machine" reports that after Gutenberg and his business partner printed copies of the Bible, they traveled to Paris and sold copies of their product on the street.  The price they asked for a copy was much lower than Bibles sold for usually.  People were amazed but some reported the sellers to the police.  The problem?  It was obvious that these sellers were in league with the Devil!  The telltale evidence was the observable fact that a given page in every copy was identical to the same page in all the copies!!