Costcos give a scanner to the person running the self checkouts, not to the customer, so you have to wait for them to come over. They are very attentive usually but still. (Perhaps this isn’t the case at all of them but I’ve seen it several times in various states.)

Their website/app makes it impossible to just see what’s in store at what price. Go search for coca cola and I see the price to have it delivered (much higher than in store) and a link to instacart. No pickup options or even prices.

On Sams Club’s website I can see that in store price and order it for pickup.

Again, Costco could keep the things we all like and just have basic 2018 functionality, it isn’t hard.