NEW DELHI, Feb. 16 -- Developers have a new trick up their sleeves to boost sales. In order to attract buyers and make properties look more affordable, developers are now reducing the average unit size to bring down the overall cost of an apartment. The good news for interested buyers is that while they would be compromising on the overall space, the carpet area, the actual usable area which is typically less than the super built-up area that is advertised, will not come down by the same proportion....