Yeah, this is the reason I only ever buy shoes in person or from someplace that has zero problem with returns, like Zappos. I have everything from a 9.5 wide to a 12 regular, with room for another complete set of toes. I consider myself lucky if it comes in a wide at all, not so discerning between 3E and 4E.
I <3 Oxfords, though, so had to look.