Hidden costs buyers only discover after possession

Did a site visit to Kviraaj Mayfair last week, and honestly, the 'completed' tag feels a bit misleading when you factor in the final cost. I work in real estate, but even I'm shocked by how many charges pop up after the base price. They quote ₹71.60L, but then there's stamp duty, registration, and suddenly maintenance advance for years. It's like they intentionally hide the real total cost of ownership. Did anyone else buying in Kviraaj Mayfair face this? What was your final TCO including all these hidden extras?