Up for sale are three audio books written by the late Douglas Adams. The titles include 'Dirk Gently', 'The Hitchhikers Guide To Galaxy', and 'Dirk Gently' again. The books are narrated in English and are perfect for fans of science fiction and comedy. The author is known for his witty and clever writing style that keeps readers engaged until the very end. These audio books are a must-have for any Douglas Adams fan or anyone who loves a good laugh.