I shopped at Costco every week. I always joke I am addicted to Costco and I ever buy a house again, there has to be a costco within 5 miles.
I don't coupon or bargain hunt at local grocery stores a lot because I don't have time for doing that. Costco is THE place to go for good price and more important, good quality.
I buy all my fruits there. Quality varies, but most of the fruits are very good. I love their cherry, rasberry, blackberry, grapes, mango, apples and bananas.
I buy some of my vegetables there. Cucumbers, tomatoes, bok choy and asparagus are what I buy most.
On the freezer section, there is a big bag of frozen vegetables of brocolli, califlower, and 2 kinds of carrots. I think it's called Normandy Blend or sth. On the days I am too lazy to cook veggies, I just put some of that on the steamer and I got a health side.
Eggs, milk, soymilk, orange juice, I all buy from Costco.
Their desserts are all sooooo good. I highly recommend their cream puff and tiramisu as once in a long while guilty pleasure.
In their deli section, I buy sometime their chiken fettuccini and I agree with the previous post, the coissant is very good.
But again, I don't coupon on stockpile on sale item at local grocery. I do recognize all the stuff mentioned can be way cheap if they happen to be on sale.