Ghaziabad: What builders don't tell you about final costs

Since last year, I've been eyeing properties in Ghaziabad, especially Indirapuram. I work in real estate, but buying for myself is a whole different ballgame. TMR Group ke projects dekh raha hoon, but yaar, ye hidden charges jo possession ke time pe aate hain, unse kaise bachein? Maintenance advance, utility setup charges... builders pehle batate nahi. Total acquisition cost mein PLC, parking, stamp duty sab mila ke, kitna extra budget rakhna chahiye? Jo initial quote hota hai, usse kitna upar jaata hai final bill? Any experiences with TMR or similar builders in Ghaziabad?