Generally fine, but can be inconsistent. It is inherent in their business model that wholesale suppliers can and will change regularly.

I didn't shop there regularly pre-Covid, instead my wife and I considered a visit akin to a fun treasure hunt. Have good friends who semi-regularly shopping at Grocery Outlet but the couple nicknamed it "The Used Food Store", because sometimes they will come across some bargain that is so inexpensive, that the food must be "Used".