I could not find a Sam's Club thread, so I apologize in advance if this has already been mentioned.
My store has a 4 pack of Super Stacker boxes for $20. It has 1 Letter/Legal File Box, 1 Document Box, and 2 Storage Boxes. One of the storage boxes has a divided tray. They weren't in the office aisle in my small store, but with light bulbs. These boxes are really great for storage, so I thought I would mention it.