Your best bet is to look on the dvd box cover and see what's included in the dvd. They usually teel you if there is bonus content. Of course they rarely tell you what that bonue content is but it's been my experience that bonus stuff isn't all that interesting unless you like to see BTS content. I don't so I wouldn't look at it. The other common bonus stuff are scenes from the directors other dvd's but there again it's not something I care about because if i like his stuff then I probably already have that dvd.

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