Candeo project: Super area games and pre-launch pricing?

Is that 15% super area vs carpet area difference really standard for Gurugram now? I work in real estate, but buying for myself is a different ballgame. Looking at a Candeo project near Officers Colony, their super area feels inflated for a 3BHK. Builders play these games, I know, but for a ₹1.8 Cr flat, it adds up. What's the real deal with pre-launch pricing? Genuinely cheaper or just to lock in buyers early? Should I wait for open market rates? Thoughts?