Also Costco has a really annoying "treasure hunt" strategy where goods are re-arranged around the store trying to get you to explore aisles (aka get lost and waste time) to impulse buy more stuff.
Other stores (Target, Walmart, etc) will let you look up the item's aisle in their app and be considerate of your time.
I love Costco, but I hate that they constantly move shit!
Costco's app will let you search inventory, but not let you see location or quantity.