I can confirm that the Wal Mart deals are in store only as I was just at my local Wal Mart and they were rolling pallets of Wii, DS, PS3, 360 games and DVDs/BluRays out all marked with $5, $10, $15, and $30. I didn't see anything I was interested in and when I was leaving the one thing that caught my eye was the pallet of Red Dead and Medal of Honor marked for $29. More pallets were coming out though.
I asked an employee and she said that stuff is for midnight, the other I guess bigger stuff is at 5 AM.
So I'm shooting for Ratchet and Clank, Uncharted 2, and God of War collection.