We live 5 minutes from a Costco. We're there, probably too much. (My kids tease dh about it being his Happy Place.
) We have several in our area and I've noticed that they don't always stock the same items. Same with the Costco near my parents in another state.
If you wear glasses or contacts, their prices are often much better than anywhere else for us. Ditto the pharmacy.
I second the Wine tip. It's similar to 90+ Cellars in that you never know what they will have, but that it will at least be decent.
Their return policy is very generous, so we buy small electronics and appliances there if possible. I got my last Kitchen Aid Mixer and Instant Pot from Costco. Same with clothing. You can't try it on, but knowing I can easily return whatever doesn't fit means that I can pick things up for the kids guilt-free.
School supplies
Rotisserie chickens
Frozen fruit - especially their 3-berry blend
flour, sugar, Himalayan pink salt, vanilla, spices (I bake a lot!)
Fish
Romano cheese
Greek yogurt
Car tires and batteries, windshield wiper blades
We first got a membership because we had a dog and what we saved on pet food over the pet store prices was enough to pay for the membership. I don't know if that's still the case because it's worth looking into if you have pets.
---------- Post added at 01:53 PM ---------- Previous post was at 01:27 PM ----------
I just got back from the pantry and have to add:
gallons of white vinegar and baking soda (for cleaning)
dishwasher detergent
Kirkland Italian Sparkling water - a knock-off of San Pellegrino my kids much prefer