Sector 108's investment potential is overhyped, change my mind.

Budget finalised, loan pre-approved – now stuck on Sector 108. I'm looking at properties, some 3BHKs are touching ₹1.2Cr. Honestly, is this price justified for the investment potential? I'm tracking the market for 3-5 years appreciation. Builders like Godrej Properties are there, but I've seen overvaluation before. What's the real ROI here, considering Jewar Airport ka impact? Koi upcoming development hai jo game-changer ho sakti hai? Don't want to overpay. Any negotiation tips on current prices?