Flat For Sale in Sumsum Grand Off-Plan in Malir: What a 3-Bed Flat at Sumsum Grand 2 Reveals About Karachi's Emerging Corridors A 3-bed off-plan flat at Sumsum Grand 2 on Karachi's Main Jinnah Avenue — what the PKR 35.36M price point, location fundamentals, and payment structure mean for a deliberate buyer.