Karajan’s Deutsche Grammophon complete recordings is recorded on chronological order. From the “Magic Flute” overture of the 1938 recording used as first recording to the recording of the last in 1989, and the Symphony No.7 of Bruckner. There is no selling separately. It becomes ordering limited production.
Volume 2 of EMI's comprehensive Herbert von Karajan centenary edition gathers virtually all of the conductor's operatic and vocal output for the label in one place, taking up 71 CDs (Disc 72 contains complete librettos in the form of PDF files). I use the word "virtually" because the package omits four posthumously issued archival items taped live during the 1957-60 Salzburg Festivals (Beethoven's Missa solemnis, Brahms' German Requiem, Bruckner's Te Deum, and Verdi's Requiem). Otherwise, it's all here.