This article is from the Toys FAQ, by email@example.com (Scott Gordon) with numerous contributions by others.
No. If an item is being advertised as MIB or MOC, and you are
concerned about the condition of the packaging, you *must* ask.
Any honest seller will tell you the condition, in detail, of
anything you are going to buy, unfortunately most sellers are
dealers, and an "honest dealer" is a contradiction in terms (an
excellent example of oxymoron for English class), so if nothing is
stated specifically, ask.