I went searching for a Wii yesterday... I didn't expect to find one easily, but I thought it was worth a shot.  I checked a local Target store, gone.  Then the local Best Buy, no luck.  The nearest Best Buy that had one in stock was in Bismark, ND.  I live in the extreme west suburbs on western Minneapolis, MN.  Here's a little indicator of the distance I'd have to travel:

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So a buddy of mine tipped me off to checking the local Walmarts.  The first one I tried had one.  I think people sometimes forget or are too proud to check out their local Wally World.  Try it, you may have an easier time finding on there than the other big stores.