Wow!!! I should go into the mushroom export business. I can see why they are not used in Brazil. Plain button mushrooms go for a few dollars a pound here. Since mushrooms are easy to grow you should start a mushroom farm and get rich!
If you´re looking for a partner based in Brazil....
There are a lot of shimenji, hirataki, shitake, creminis and one called "Sun Mushroom"(?) that are grown here and exported to Japan. Bill, as far as not knowing how good you´ve got it, I´d say that in the world of fungus, you´re in paradise.
Chiguy, thanks for the conversion. This changes the values that I posted-which would be roughly 50% of the cost that I listed. Yup, either way it´s still expensive. Oh well, I can think of worse things to spend my money on than fungus