As myself and 3 friends were checking out games in EB during our lunch today, the manager told an employee to "take out 4 copies and put them on the shelf". We bought three of those copies so they most certainly are out there, but either places are truly holding them back, or seeping them out real slow.
EB online has teetered between listing them as available and backordered so if you're interested, I'd grab it from their site before it goes away.... just be prepared for the current instability and queues.