Here in Juneau (home to the smallest Costco, per the newspaper), we can get some pretty good stuff, but it can be hit or miss. Alaskan brewery, which is literally the next parking lot over is often stocked at the store. I was able to get several bombers that were 3 dollars cheaper then what they were selling it for at the brewery or anywhere else in town (smoked porter, Double black IPA). They seem to stick to regional breweries, I have also scored some deals on rogue brewery bombers.