The von Bulow one is currently available from Schirmer, though not as amended by Buonamici.
I've read that the von Bulow one is a bit flaky, but am not sure how reliable that is.Buonamici is a useful editor for fingerings and so forth, but he is inclined to be somewhat inventive when it comes to the actual notes.
Originally when asked to edit the sonata's I declined as I felt that I was not yet experienced enough for such a task. It dawned on me though, that having studied all 32 sonata's under the direction of Bulow it would be almost unreasonable of me not to share that knowledge....As such I have edited these sonatas exactly as I believe my master teacher would have, and, where any direction significantly differs from the composers it has been noted as "according to bulow"
Do you suppose that means it is likely public domain?
Perhaps a little odd if there is already a bulow version - too bad I can't get a look inside to see how different it is..
Bulow died in 1894.. but there's a copyright version of his..Contributors Hans Von Bulow, Ludwig Van BeethovenEdition revisedPublisher Hal Leonard Corporation, 1986..Or are we saying if I had bulow, printed in ~1900 by a different publisher then it'd be ok? Its a bit sketchy - atleast given my limited understanding of the technicalities.
If the Pathetique you are looking at is from 1799, it must be the first published edition.
This one was also good to look at and have a laugh about music teachers getting upset about my less than neat notation.