Negotiating with Noida builders is just a formality, right?

Negotiating with builders like 99 Homez in Sector 44 is just a waste of time, right? I'm looking at a 2BHK there, mera budget around ₹78L hai. Honestly, not sure if I can push them on price. Builder sales reps toh bolte hain fixed hai. Kya koi actual mein negotiation kar paya hai Noida mein, especially with big names? Matlab, basic price pe ya PLC, floor rise pe bhi kuch kam hota hai? Aur site visit pe kya kya check karna chahiye jo builder nahi batayega? Jaise water pressure, cell signal, ya nearby construction plans. I'm a first-time buyer, toh thoda nervous hoon. Koi hidden costs ya red flags bhi hain kya jo site pe dikhte hain? Ab samajh nahi aa raha kaise approach karun. Your experiences really help.