It seems only DLF did not factor the changing economic scenario, reducing costs of construction and lowering interest rates, when it had fixed the prices for its projects. They sited those reasons when they made a price cut recently.
All other builders were wise enough to forsee the problems and had priced their projects right. Some go to the extent of suggesting that reducing the prices can only result in reduced quality and hence they will not reduce prices in their projects.
Justifying the need to retain old prices seems to be a problem at hand for the builders. Either they need to come up with convincing answers on why they will not reduce the prices or they will have to bite the bullet.
Read about what some builders have to say..