I preordered one right after Christmas at an EB B&M. It appears that, at the moment, you can only order bundles online, but you can buy the unit by itself if you preorder in-store.
myke.
...which, of course, means you'll have to go back to that store on release day to trudge through the acne, sweat, and drool of other gamers, rather than let the wonderful postman bring it to you. A small price to pay to avoid accessories you would otherwise rather not have.