Prestige Doddanekkundi: What negotiation hacks worked for you?

₹1.4 Cr for a 3BHK at Prestige's Doddanekkundi project was their first quote. Just moved in, and realized negotiation isn't about the base price. Push hard on PLC, parking, or custom fit-outs. Pre-launch pricing? Often inflated, so compare open market rates thoroughly. Hidden charges like IFMS and club membership hit hard at possession. What other hacks did you all find?