Hidden costs buyers only discover after possession

₹1.5 crore budget, 2 months se search kar raha hoon. Ekta Gardens (completed) ka total cost of ownership predictable hai, but resale market kaisi hai? Tarun Vihar Apartments ₹1.30-1.70 Cr mein hai, but 'null' possession status hai. Matlab under-construction ka risk, hidden costs ka tension. Which one makes more sense, for the actual final cost?