In my part of the woods you won't see a SxS on the shelf at the gun stores and not that many at the gun shows. If they are not readily available we can't expect the uninitiated to purchase them. Besides, almost all SxS now-a-days are second hand and it takes a bit of knowledge to decipher what you are looking at. That knowledge takes time to acquire and not all that many are interested.

At the gun store where I occasionally purchase a SxS they are kept in the back to make room for what readily sells. You have to now to ask if anything new has come in on trade or consignment.

Nothing is foolproof to a sufficiently talented fool.