How much negotiation is possible on a Gurgaon flat?

Sector 95A — I'm checking out projects here, including Emperium Infrastructure. I work in real estate, but buying for myself is a totally different ball game, yaar. I know builders play games, especially with pre-launch offers. They always push pre-launch as "best price," but is it *really* cheaper than buying later, ya bas marketing spin hai? For an investor, every rupee matters. On a 1.8 Cr flat, how much can one *realistically* bargain? Builders usually say no room for negotiation, but I'm looking for genuine insider tips. Kya koi secret tactics hain to get a few lakhs off, even on Construction-Linked Plans? Also, super area vs carpet area ka game toh chalta hi hai. Any tips to ensure the final cost aligns with actual usable space? Looking for honest opinions from anyone jo recently Gurgaon mein buy kiya hai.