I personally see it as more of a gesture to apple than anything else. I bought a retail version from amazon UK for Â£80 and I'm pretty happy with that.
I believe also that the license doesn't allow installation of OSX on non-apple hardware, but frankly I've paid for it and I'll do what I want with it. I could have downloaded it from a torrent site, but Apple have Â£80 of my money they wouldn't have had otherwise, and I have the OS I wanted without the over-priced hardware to go with it. After all, OSX has bootcamp for Apple computers and you can install windows for example, so I and many others are just reversing this to suit them not some big corporation. Also, this site does not condone piracy.