It has to be a regional thing. Brisket is dirt cheap in Oklahoma. Packer trim $.99lb. and butts, when you can find them, can be $1.50lb. on sale. I haven't seen butts at our Sam's, but I've never asked the butcher. I saw in another post that Sam's doesn't put them out, but cuts them for country ribs. Next time I'm there I will ask.
Bob