Hyderabad 3BHK: struggling with true costs and negotiation

₹1.1 crore for a 3BHK in Gachibowli was the initial quote, but the 'all-in' cost keeps climbing. I'm based in Dubai, so site visits are tough, relying heavily on community insights. My Home Constructions added a PLC and floor rise premium, pushing the price significantly. Salarpuria Sattva also had these last-minute charges. Does negotiation actually work in Hyderabad for a 3BHK around ₹1.2 Cr, or is it mostly a fixed game? What hidden charges should I watch out for at possession? Any advice from other overseas investors?