@luis_in_brief it has all of the staples but delivery is weird. You can’t easily get random stuff like ‘a two to three prong adapter’ or ‘one single plug with four USB’s’
Then things they do have are very good.
You can deliver some things from Costco.com but not fresh things (for which you have to use sameday.costco.com, which is Instacart).
The savings on toilet paper, kitchen towels, Impossible nuggets (they have the large pack no one else does for the same price as the small one), detergent and pharmacy is worth the cost for me tho (in addition to prime).
The pharmacy is really good and their out of pocket prices for optometry and pharmacy is comparable to insured prices for both at non-Costco places. Very cheap vaccines even without insurance. (Which helped when I was job hunting)
@luis_in_brief you can also use Costco pharmacy without being a member! But if it’s not super close to you then it’s not useful