But then I read an interesting fact on MacRumors: Target stores expose their internal tracking information to the public. If you know the internal stock ID (DPCI number) of a product, you can use it to check for that product in all the stores near a given zip code. The stock system seems remarkably up-to-date (changes every few minutes), and it will even tell you where in the store the item is located (example: Digital Audio, aisle F20). Lucky for me (and anyone else looking for an iPad 2), a nice gentleman posted the DPCI numbers for all of the various models in both colors. He even included links to quickly check stock in your area.
Very cool. I bet the company closes this up pretty quick, though.