Gryph,
I would also suggest just making a list of all the places in town, calling all of them, asking when their new shipments are expected in for such things, asking if you can can be put on a waiting list, and if you call and they have one, asking if they can hold it for you for 10 mins. And then if that fails, keep calling and asking if they have any in. hehe.
also...i was thinking. some of the stores might have a program where if another location has one in, they will send it to another location....maybe?
if all else fails, maybe one of these lovely people on here who have stated they have places in their towns with Wiis could buy it and send it to you (you pay them, of course.)
just some ideas!