I wonder what DAW's distribution situation is like in Canada -- the books do have a Canadian as well as a US price on them, and if they could make it as far as California they should certainly be able to make it to Vancouver, but the ways of the large distributors can be inscrutable.
However, it's also true that independent bookstores are sometimes more directly influenced by their customers than the chains are -- so you may be helping to fix the situation just by asking for the books, Rahl.
Not that that's likely to be much comfort when you want the book now, instead of some hypothetical future date ... but still, if you are asking as well as looking you are doing a very good thing.
I, personally, hate to go into any kind of store and ask a sales person for anything (intellectually, I know that the worst that is likely to happen is a blank stare, but emotionally I'm always expecting the glance of withering scorn), so I admire very much people who have the courage to do it.