Sector 66 ke prices mein real negotiation kitni hai?

Sector 66 — I'm looking at a few projects here, par prices seem thode inflated. I work in real estate, but khud ke liye buy karna is different. Builders jo quotes de rahe hain, ismein actual negotiation ka kitna scope hai? Plus, koi hidden costs bhi hain jo residents ne baad mein discover kiye hon? Off the record, what's the real ground reality for all-in price?