These books would be a lot of money if you were to buy them all in physical book form. Reasons to buy if you own them already in book form. * buying them in logos will make the books integrated and searchable with the powerful tools logos provides. * many are waiting for the books to be in logos form so your contribution helps push the books forward to others. To me the martyrs mirror and the complete writings of Menno Simons alone are worth the money and I own them both In hard copy. It would take me forever to do the research in hard copies or even PDFs that I plan to do with these books once they are in logos version.