I know how you feel--I've got a decade's worth of shoes around here. I wear a 13EEEE running shoe (and I'm not a runner, I just need the shape), more likely than not a shoe store will have nothing that fits. Thus when I find something good I stock up.

At least for the trails I can so far reliably get shoes that fit, although even there there's none to be had in town, they have to be ordered.