I enjoy Costco. It's the sort of place that can really help a person out when they've spent the better part of a day thinking, "I have zero of a product...and I'd really like to purchase a pallet of said product, thus negating my need to ever purchase said product again."
Plus, they give out lots of samples and have a foot-long dog and a drink for $1.50 at their snack bar. I'm there. The hot dog alone is worth buying a membership.