I picked up a few at LIH on Aug. 26, on my way to the GH Kauai. Today, at the pool, I thought I was being helpful telling the folks in the next cabana about the Costco certs. I said they should call ahead to make sure they were still in stock, although given that I was told on Wednesday that over 200 sets were in stock, I thought it highly unlikely that the certs would be already sold out. These folks were giddy with excitement. To their dismay, they called and were told that the certs had sold out last week. I, too, am surprised that they sold out so quickly.