Clusters of dove-gray oyster mushrooms are $10 a pound, and shiitakes are $12. ???On a good market day we???ll sell 50 to 100 pounds,??? he said.DiFranco likes eating mushrooms, especially shiitakes sauteed in butter and olive oil, with garlic and zucchini, by itself or over spaghetti.People tell DiFranco they come to the market just for his mushrooms, he said.???Nobody???s ever seen a vendor sell