New Delhi homebuyers, what's your true cost experience?

Did a site visit to Express Builders in Bhagwati Garden Extension, Block A on Saturday. They quoted ₹1.8 Cr for a 3BHK, but the final all-in cost with stamp duty, registration, PLC, parking, and even some random 'club membership' was almost ₹2.2 Cr! Matlab, this is a huge jump. My wife is worried about kids' school admission later, and this budget shock isn't helping. Has anyone else faced such hidden charges? How do you factor these into your initial budget? Seriously frustrating.