Update (for YYC folks):
Called the following SDMs tonight to see if they had stock:
The above (plus Evergreen) either didn't have stock at all or informed me that they had just sold their last copies earlier today.
Finally, I called Deer Run SDM, and to my surprise, they had a copy. So I ran over and grabbed it. The person mentioned that they had a couple, but I am not sure if they meant that they still had some, or if they had already sold a couple earlier today. Worth calling tomorrow morning if you're still interested (assuming you still have a 20x offer tomorrow).