I think Swanny has it right for many of the items like this. In past jobs I've managed dealer networks, and one of the ways that dealers got around my MAP (minimum advertised pricing) was selling new equipment as "open box". I've also bought a PS Audio PowerPlant from a dealer via Audiogon that was clearly sold this way.
On the other hand, I'm sure that there are those who have bought equipment, hated it, and tried to dump it as "new" after a few weeks or months.... as always, Caveat Emptor.
On the other hand, I'm sure that there are those who have bought equipment, hated it, and tried to dump it as "new" after a few weeks or months.... as always, Caveat Emptor.