Merriam-Webster's Collegiate Dictionary (2003, Hardcover, Revised edition)

Brand new: Lowest price

The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable).

Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.

See details for additional description.