Went back in for something else, and Voila! They had the other films out so I very happily grabbed a Viva Zapata. (Got others yesterday.)
My store also has:
DVD - The WB "star" sets (Crawford, Bogart & Bacall, etc.) for $15 each -- a steal at $3 per movie.
DVD - The Three Stooges box, for $45.
BLU - The Coen Brothers 4-film set for $19.
A good week at Costco. We need many more like it!