Stuck on true 3BHK cost in Gurugram

₹3.5 Cr for a 3BHK in Sector 65 feels steep, especially when I'm upgrading from my current 2BHK. I'm looking at Whiteland Corporation projects, but honestly, the all-in cost is confusing. Beyond the basic price, what are people actually paying for stamp duty, registration, and those surprise charges at possession? Is a 1.5% negotiation on base price even worth it if hidden costs like PLC or OC eat it all up? What's the community's experience?