File this under N for "No idea why", but Walmart has begun accepting preorders for just the bonuses you receive when you preorder games like Assassin's Creed 3, Black Ops 2 and more for a mere thirty five cents. Included with your preorder of a preorder is a preorder bonus as well. Yeah, it gets confusing.
Update It appears the deal has died for most people. You can still try to order, but odds are it is done.