This was all new to me. I usually shop at my neighborhood grocery where the distance between the produce and dairy departments is about 12 feet and you can barely get your cart down the aisle. Costco's shopping carts are larger than my car. They have to be. Every item there is sold in incredibly large sizes or packed in multiples.
I don't know about you but I am not accustomed to purchasing 10 pound containers of dishwasher detergent and 36-can cases of Mountain Dew. ("Honey, let's get the 72 oz tube of KY 'cause it's only $1.49 here at Costco.")
I bought a one-year membership but I don't think I'll need to go back that soon. This trip I bought 14 tubes of toothpaste, 120 cans of tuna, three gallons of mayonnaise, and a bushel of Cheerios. The package containing 75 rolls of toilet paper was just too big for my car.