Did this psychic appear to be popular? Was there a waiting room full of clients?
No. From what I gathered, she came to this shop once a month, and the shop owner did a low-key, local advertising, though mostly it was word of mouth. We saw her as soon as we entered, and as we were leaving, 2 or 3 other people were waiting to have readings done.
For one evening a month, giving readings at a starting price of $25, she could easily bring in $300. I don't know, but assume, she does her 'gig' at other places in town. She could be bringing home a couple of thousand or more, a month.