Indiabulls Centrum Park

Everyone glorifies the brochure price but nobody talks about the total cost of ownership in these 'luxury' projects. I'm fed up of renting, my landlord raised rent again, so I'm finally taking the plunge in Sohna. Looking at Indiabulls Centrum Park and DLF The Ultima Phase II. Both are completed, which is great, but what about the hidden costs? Stamp duty, maintenance, interiors... it all adds up. Is the resale market actually active in either, or are they ghost societies with high investor ratios? Change my mind if I'm wrong.