>>2551300>expensive mushrooms are expensive because a lot of them cant be farmed or grown, and have to literally be foraged innawoods at certain times of year. Yeah that's true for quite a few that live in symbiosis with trees. They're always there among the roots but only fruiting at certain times of year. Very hard to "farm" such kinds of mushrooms, even though some are very good to eat, as it's going to involve planting a forest and going in to pick them seasonally as a side product to the timber that was probably the main thing you planted for. Same with truffles with the added challenge that you need to find them under the ground..
Other ones you can grow some harder than others but some may not be so suitable for sale because they don't keep well or mature very fast or slow. That's why we have few that are cultivated large scale and the king of those is A. bisporus which makes up all your "normal" white button mushrooms and portabellos that are easy to find. The things are all the same mushroom maybe slightly different strains and picked at different level of maturity
