funny that you brought this up... was looking at this kinda stuff a couple of weeks back and i found that, generally, indian computer part prices are $50 to $100 more expensive per component than in the US. i looked at processor, motherboard, graphics card, memory, and optical drive.
here are some prices quotes i got:
AMD 64 Bit Dual Core - 4200 - Rs. 11, 900/-
AMD 64 Bit Dual Core - 3800 - Rs. 9500
ASUS MotherBoard 939 - A810-VM - Rs. 3900
ASUS MotherBoard 939 - A8N-SLI - Rs. 6900
ASUS MotherBoard 939 - A810 - Rs. 5700
1 GB DDR RAM Hynix - Rs. 4600
7900GT (256 MB) - Rs. 21000
7900GT (512 MB) - Rs. 34500
LG & Samsung - Dual Layer - Rs. 2400