A member of a highly respected early German industrial project and label was suspected of doing this a long time ago on ebay. Can't recall if they used Discogs as well. I can't remember if it was ever confirmed or not, but I do know it soured a lot of people who collected and were heavy into that whole world of projects because it was so suspicious. Cassettes limited to 7, 8, or 10 copies in the 80s, and more than one copy selling in mint/perfect/made yesterday condition. At first, the final bids were nuts, as in hundreds of dollars, and then that tapered off a bit. I believe it caused some drama between members as well, but that too was not entirely clear.
By the time something like this happens, the people involved simply do not care at all about reputation or legacy. Money trumps it all. When an artist, or label, works a long time to develop their style, their reputation, their brand, and their legacy, all to throw it away in a matter of a couple weeks to a couple of months. I normally frown upon talk of legacy, but when something so uncommon is thrown in a fire over what is essentially not that much money, thinking short term rather than allowing the long game to play out, it's a little sad to watch.