Costco isn't just for big families. You could have a small family, or be single like me and still find some great deals you can't find anywhere else. Things like walnuts and steel cut oats are a fraction of the price when you buy in bulk. And their no hassle return policy is the best. I do wish they had some more organic food, but hopefully that'll change someday.
Come by on a Saturday afternoon. The parking lots are full and the line-ups are crazy, but this is when they have the most samplers out and you could pretty much get a free, filling lunch while shopping!