Much to my surprise, my local Costco had 23 units. When I arrived an hour before opening, I was 9th in line and, when I left the store they still had at least 4 units sitting in the cage. (Ah, the joys of living in a small town!)
Now, in an unmatched exhibition of self-control, I won't open it until I finish the 20-30 more hours of work I have scheduled for the month. Argh!