Well, it costs $200 from B&H, almost same as in Pakistan. I think it costs 19,000-21,000-/ over here. It has Image Stabilizer as well:)
Plus, many people like it!
Sigma 70-300mm f/4-5.6 DG OS Lens for Nikon Digital 572306 B&H
I got the same bag for 1500-/ and Tripod for 4500-/, I got ripped off on the latter one