Fed up of renting in Bangalore, finally taking the plunge

Electronic City Phase II – I've been eyeing a few 2BHKs, specifically Keya Homes, and I'm seriously fed up of renting. My landlord raised rent again, so I'm finally taking the plunge. Builders quote insane prices, but how much can you *actually* negotiate on a 1.2 Cr flat? I've heard some manage 5-10%, but that feels like a dream. Are they just playing hardball or is there real wiggle room? Also, what about all the hidden charges that pop up near possession? PLC, floor rise, maintenance deposits – it adds up so fast. Thinking about secondary market deals too. Is there more negotiation leverage on resale than with new projects? Just trying to maximize my ROI and avoid getting fleeced.