Noida Extension resale: is value still there?

Since January I've been shortlisting flats in Noida Extension. I work in real estate, but buying for myself is a different game, yaar. Builders like Whitney Build Home are quoting crazy numbers for new projects in Sector 134, even with Jewar airport buzz. I'm thinking of checking secondary market deals instead. Kya wahan better negotiation possible hai? Like, can I actually find some price correction zones with underpriced assets, maybe a 2BHK around ₹65L? Builders ka game samajh aata hai, but resale mein hidden costs kam hote hain kya?