You can buy from Costco from the Costco online store. Same-day shipping items are processed using Instacart, so it is more expensive. However, Costco does have

You can buy from Costco from the Costco online store. Same-day shipping items are processed using Instacart, so it is more expensive. However, Costco does have a 2-day shopping section, and everything else that cannot be shipped in 2 days is a separate section. In addition, Costco is upfront about the fact that some of items might be cheaper in their physical store. However, I got myself a Costco membership, bought from them exclusively online and I’ve been very happy with my results. I don’t have a car, so my available options are what you would expect. I’m also happy that I can move away from Amazon for more of my regular / staple purchases.