All right,
Found some shops yesterday in Lajpat Rai dealing with PCBs and FeCl3. Shop no. 80 was closed, but I found that shop no. 3 was selling unetched PCBs (Rs. 45 for 1 sq.ft. board), and shop no. 200 was selling FeCl3 (Rs. 165 for 1 litre). Shop no. 200 had a great catalogue of tools and chemicals, and had all the tools that might be needed by anyone into robotics.