Builder quotes are never the full picture

Okay I'll be honest — I completely underestimated how confusing this process is for a first-time buyer. I'm looking at a 2BHK with Salarpuria Sattva near Keesara Road, and the initial quote seemed manageable. But then the hidden costs started showing up, one by one. Honestly, I thought the price was just for the flat, ya know? Things like PLC, amenity charges, maintenance advance... it just keeps piling up. And the super area vs carpet area difference? I had no idea it would affect the final cost so much. My parents keep saying 'read the fine print' but ab samajh nahi aa raha. Did anyone else face this with their first home in Hyderabad? How much extra should I *really* budget beyond the property price for all these surprises? Is this normal or am I missing something huge?