Builders' 'all-in' cost is never really all-in

₹78 lakh for a 2BHK in Nehru Nagar III, SARE Homes, lag raha hai. Main industry mein hoon, but khud ke liye buying different hai. Builders jo quote karte hain, final all-in cost kitna upar jaata hai? Stamp duty, registration, PLC, parking... sab milake kitna extra pakadna chahiye? Koi hidden charges toh nahi aate baad mein?