Can someone please help me understand why the book I would like to buy "Cross & Salvation by Bruce Demarest" costs $26.95 on Logos, but only $15.39 on Kindle? Can I buy the electronic file in Kindle and import it to work with Logos, say they same way I can buy a book from a seller with the best price but read it wherever I want - ie - home, office, library, beach, etc? Thank you for your help.