Upgrading to 3BHK: Is the premium in Sector 150 justified?

₹1.5 Cr for a 3BHK in Sector 150 - is this price justified or just hype? Currently in a 2BHK in Sector 78, thinking of upgrading. Dekh raha hoon ATS ya Godrej ke projects, but price jump bohot zyada lag raha hai. Already have a home loan, so EMI will be a stretch. Noida Extension mein bhi kuch options hain, but connectivity ka doubt hai. Jewar Airport aur FNG ka kitna impact hoga future appreciation pe? Is a 3BHK really worth the premium over my current setup, ya just wait karna chahiye?