Oyster Mushroom; if doing in a round the year AC plant, Production cost comes around Rs. 22/kg at 80% efficiency and Rs.5/kg Wheat Straw.
Demand is some fresh and most dry oyster. Prices for grower: fresh oyster Rs. 120-140/Kg; Dry Oyster Rs. 450-650/Kg. But Prices depends upon the party you are dealing with in India. If business is with a company prices are quite good.