I purchased it in India. for Rs 2000.
Pros
The quality of the video is very good.
Adjust light when the room brightness is low( I like this very much)
Availability of MIC.
Auto focus
the LIfecam sofware have some funny frames that you can use.
Cons
Bit costly when some one goes for a separate webcam.
Description from MS website
Sharp video with Auto Focus Get the HD webcam features you need to share each moment as it happens—at a reasonable price. The LifeCam HD-5000 offers a 720p HD sensor and automatically sharpens your images with Auto Focus, while TrueColor adjusts exposure for bright, vibrant footage. Plus, the widescreen presents a remarkably cinematic feel, right from your desktop or notebook PC
