Talked to someone in the meat department at my Costco today, and confirmed that there is a serious shortage of Prime whole Packer briskets. In the meantime, many Costcos are carrying Choice whole Packers. They had plenty at my store, and they looked good. Once the Prime Packers start coming back, they will go to higher-sales Costcos in large urban areas first, then eventually will be stocked again in all. They could not tell me how long that would be, but seemed positive that they WILL eventually have them again, which is good news for my membership. It's one of the main reasons I have a membership to Costco.