It happened! - Mislabel Ribeye for $6.39/lb
I never thought I would find a mislabel, but I scored on my last trip. 5 of the 6 Ribeyes on the floor were labeled as Chuck Pot Roast. I immediately bought all 5, I now am loaded up on steak for the next few years.
I believe Ribeye was actually about $14/lb and I snagged it for $6.39lb. The store was slow that afternoon too, best Costco trip of my life.