The trade nowadays goes so that even if you sell high-tech microscopes at a scientific conference, a man will rush to the end and ask:
Do you have a witch amulet?

yyy: I saw a man at a conference selling some equipment for ultrasound mountain scanning. He had a witch amulet. Not for sale, but it was.

zzz: Alexander, no matter who lives in the caves, he will find a job as a witch.