First Bangalore Home: Hidden costs making me anxious

Visited a couple of projects in Doddakannelli last weekend, including one by Hebron Properties. Honestly, itna sara options hai ki samajh nahi aa raha where to even start shortlisting. My budget is around ₹75-80L for a 2BHK, but builders sirf basic price batate hain. Nobody really tells you about all the extra charges beyond property price, yaar. Like stamp duty, registration, legal fees, and then interiors ka kharcha – woh sab kitna add ho jaata hai? I'm worried about these hidden costs eating into my buffer. My parents keep saying 'sab milake hi dekho', but mujhe proper estimate hi nahi aa raha. Site visit pe kya kya questions poochne chahiye jo sales log khud nahi batate? Any red flags to watch out for in the builder-buyer agreement? Am I the only one confused by this whole process?