I found that Nine West has a great selection, although in the US boots are becoming harder to find now that the spring fashions are appearing. They have, at least in the Chicago land area, lots of 9, 9.5, 10, 10.5 and 11's left in the outlet stores (I've been to two).
BTW - I've worked up the courage to try on women's shoes in the store and NOT ONCE has anyone batted an eye. I've had clerks help and in one case even another customer made some suggestions. As others have commented many times, the world didn't end. Now I actually like going into stores to try on shoes. Just call me Imelda