In the bundle version of BD, the 2 BD CDs come in a jewel case, and the 3 DD CDs are in cardboard sleeves. It sounds like someone bought and returned the box you have, keeping the DD CDs, or opened it at the store as you suggested. Bring it back and exchange it, if possible (I assume if you had noticed other sealed boxes you would have taken one of them rather than the unsealed box).
Welcome to the forum. <img src="/ubbthreads/images/graemlins/wave.gif" alt="" />
