This does not surprise me. Costco has been steadily adding to sales. No, they didn't boom ahead, but like the proverbial turtle, they are bumping along. I would rather have the turtle any day, any time over the hare.
I find the information on Richard Galanti, CFO of Costco, to be particularly poignant of the culture and success of Costco. "We try to be forthright and deal with the issues head-on, focus on the long-term, and not over promise."