Usually once a week. I buy nearly everything there.
About every 6 weeks to stock up an meat pantry and household items. I drop 400 to 600 on a trip. In between I get produce at other stores so I can keep it fresh (I don't need half a bushel of lettuce that goes bad in 3 days)
My nearest one is 60 miles away, so I don't go too often anymore.
I ended up in an odd situation. My next door neighbor, who is 83, works at USDA food giveaways.
So when they aren't able to give away everything he gives a lot of it to me. So I've been working on making recipes from the excess and giving it back to him.
It would be nice to get to Costco for other stuff.
We go maybe twice a month. We have to go down and cross the border into Oregon to do it, so we don't do it that often. They have a few things that we just won't do without. My husband loves the muffins, has one every morning for breakfast.
Costco
For fans of Costco