They do, usually. The fishermen may not have come in yet. Mushrooms are a staple, for most of the city.

[He pauses, fishing in his pocket for a few moments. If they're in a story, then... ah, yes.]

[Hakkai hands one of the vendors a collection of agates. And is offered a small packet of mushroom jerky.]

Payment is done through the barter system. Often with unusual stones or shells.