I do not think that the prices will fall that much, as roti, kapda, makan is one of the basic needs of people. Look at the luxary items, are the prices of cars, plasmas etc down by 50%?? If there are no buyers then the builders will not start any new projects, then the supply will dry up and prices stablize. Also keep in mind the RBI help for flats below 20 lacs. Max prices will fall by another 10% in the next six months.