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You can get a $10 Costco gift card when you register your American Express credit card and set up automatic bill payment with the same card for your AT&T, Verizon, T-Mobile, Sprint & Alaska Digitel (sic) wireless (cell phone etc.) service.
The terms allow you to use any US-issued American Express card, so American Express cards issued by other banks such as Citi and Bank of America will also work for this promotion.
The terms also say that it may take 8 to 10 weeks to receive the $10 gift card.
Bottom Line: If you have an American Express credit card (isn’t that everyone reading?) it doesn’t hurt to set up automatic bill payment for a free $10 gift card.