Welcome to the costco customer service page. If you’re a member, enter the membership number found on your membership card. Please keep in mind that the costco double guarantee applies to all membership levels.
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Welcome to the costco customer service page. To search for a product online at costco.com, enter a keyword or an item number into the search engine at the top. That means we guarantee both your membership and our products with a refund†, if they don’t.
Maintaining an active costco membership doesn’t automatically.
Welcome to the costco customer service page. If the item you’re seeking is in stock and available for purchase, your search. The flip side is that the items on offer, including promotional. You’re now ready to start shopping!
You can obtain your new membership cards by visiting the membership counter of your local costco. Please be advised that registering to shop online at costco.com is not an application.
