Builder 'fixed prices' in TechZone IV are a joke

Are builders like Divyansh Infraheight really firm on prices, or can you push for a spot discount? I'm looking at a 2BHK in TechZone IV, Noida Extension, quoting ₹78L. They're saying prices are fixed, no negotiation. Is that true, or is there always some room? Also, would a resale flat in the same area offer more negotiation scope?