MRG World agreement and hidden costs surprised me

Since last year I've been checking out properties, mainly around Sector 44. Looking at MRG World. Honestly, I had no idea about the actual budget beyond the base price. Stamp duty, registration, PLC, OC charges... it adds up so fast. The builder agreement has so many clauses. What other hidden costs did you guys face? Any specific red flags in the agreement to watch for?