Indeed, Buzz is a label covered in a thick veil of mystery. There's barely any clue as to who and from where ran this label. Story goes that it's a 'belgain imprint which used to release ground breaking techno from Detroit'. It's one of those labels which never got the recognition of many of its contemporaries, despite having shed some light on classic Detroit releases and giving europeans a chance to hear 'em out. As stated before, much of the label's back catalogue fetches astronomical prices, be it on eBay or here on discogs, but what it all comes down to is that most of their stuff has that "I gotta have that one!" value, while real and ever lasting musical beauty, which could justifiy the price, has often been lost somewhere along the way.
That said, to my knowledge, releases such as Revelation's "Stairway to heaven", Derrick May's "Relics - A Transmat compilation", Pod's "The vanguard EP", Baruka's "Black out EP", the classic ambient master stroke "Sublunar oracles" by Trans-4M and a handful of other various artists compilations, introducing tunes by soon-to-be legends such as Carl Craig, Eddie Flashin' Fowlkes and Kenny Larkin, are all safe purchases for all techno/deep house enthusiasts, standing the test of time, and simultaneously acting as undeniable historical documents in relation to the development of electronic music, but above all, it's just fantastic and timeless music. Pure and emotional techno from the city where it originated, with no strings attached. Some of these heavily sought after gems are Buzz exclusives, so if you see them in bargain bins at your local record store - do not hesitate. But the issue, though, is how and where to find those releases for accessible prices. What I own took me quite a while to accumulate, and let me tell you, it would be some offer in order for me to consider selling ;-)