No they absolutely speaker stands and they are indeed upside-down. The big base goes on the floor and the speakers sit on the little platform. The screws under the speaker platform are pointed set-screws and do not screw into a tabletop.I'm not convinced that they are stands at all. they look like 2 single post table bases. The smaller end screws into a table top ? it's just too small of a platform to have such a big base. a larger table top mounted to the small platform seems more likely.
Legit technique to uncouple them from the floor with a smaller footprint.
"foot print" be damned! If one of those fall on the dog/cat or what ever...they are gone.
Q
My good deed for the day. Wrote the seller and told him he has the stands upside down in his photo... Hope it helps with his sale...