I work for a Supercenter in Missouri, and how the Supercenters do it, is between 4-5 a.m the pallets of BF merchandise are pulled out to the sales floor, wrapped in black plastic wrap, and placed in different areas. Like it was stated above, the items are not always placed in their departments. At 5 a.m the plastic is cut off, and customers are then allowed to purchase the BF merchandise at the BF price.