I fully agree AndyM. We've belonged to CostCo for many years now (about 15 years - back when it was still "Price Club") & LOVE it.
Buy their Kirkland toilet paper & paper towels & can't stand it when we run out & are forced to buy a national supposedly "top" brand at the stores. No comparison as to quality. Also get all our cat litter, extra-virgin olive oil, many wonderful imported cheeses, wines, fresh pastas, frozen chicken breasts, frozen cooked shrimp, frozen raviolis & potstickers there. Not to mention 3-4-foot tall Poinsettias & positively gorgeous mixed green wreaths at Xmas. Books, cut flowers, sheets & towels - frankly, the list is nearly endless.
I almost can't imagine shopping without CostCo!!