If you very keen on Intel only,
i3 530 - 4.9K approx
ASUS P7H55-M LX - 4K approx ASUSTeK Computer Inc.
Kingston 2GB DDR3 1333MHz - 1.5K approx?
500GB Seagate 7200.12 - 1.8K approx
FSP SAGAII 350 PSU- 1.5K approx
Zebronics/etc case without PSU - 1K approx
DVD writer - 1K approx
15.6" LCD monitor- 4.5K approx
Mouse+keyboard - 0.5K approx
Total- Approx 20.7K
To get a rough idea on prices- *www.deltapage.com/list/index.html