But oh man.
It's so much more.
Aside from a second DVD filled with bonus features including a lot of historical insight to 19th century England and Jane Austen's world (for the geek in us all)...you get a copy of the FULL film soundtrack (which I've been wanting for ages because it's absolutely incredible...a $14 value), a 64-page mini-book (the size of a DVD case) filled with production photos, sketches, quotes from the writer, director, and actors about the process and their characters, PLUS, a free movie ticket (up to $10.50) for Atonement.
Essentially, even if you don't care about all the extra bonus features, or the book...it's cheaper to get this right now at Best Buy than to buy the CD and Atonement movie ticket separately.
Oh, it's SO worth it.