I love costco!
I usually go once a month and buy
Nappies - love the kirkland brand. The only nappies that really "fit" my DS.
Wipes
Dips
Toilet paper
Hand towel
Milk
Bread rolls (very yummy)
Quiche
Frozen fish
Pies
Vegies
Peanut butter

Plus a few other things. They are cheap on some things but you have to know your prices. Most stuff I buy is a lot cheaper than other shops.

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