Noida Extension's infra hype is already priced in?

Visited Godrej Nest last Saturday. 3BHK prices, around ₹1.5 Cr, felt high. I'm in a 2BHK in Sector 137, thinking of upgrading, already have a home loan. Sab bol rahe Jewar Airport se bahut appreciation hoga, but isn't that already priced in? Is this premium justified?