Ripped Hi-Def Movie Appears on File Share Network

Now that the HD-DVD copy protection system has been broken, it was a matter of time before the practical fruits of that labor showed up in file sharing networks.  Serenity (the movie, not the state of mind) showed up on BitTorrent in a 19.6 GB file.  Wouldn't it be cheaper just to buy the movie instead of waiting four or more days for the download to complete?  Once Blu-Ray is broken, it won't matter which format wins.

The story is in Ars Technica.