NOTE:  "Bulk packaged" simply means that this item is the unit, the charger, and the book--but none of it has been crammed into a hip cardboard box with a bubble window to show the unit:  it was designed to be stashed behind a counter and sold individually, as opposed to "retail packaging" which means it's meant to be shown on a store sales floor.  I've purchased both forms and find no functional difference at all...buying the "bulk packaging" usually means a small savings on cost and thus a lower price.