FlyerTalk Forums - View Single Post - Amex giftcard: declined at Costco gas station
Old Jul 8, 2012 | 6:57 am
  #7  
Ragnarok
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The key to use prepaid / gift Visa/Master/Amex is Pay Inside. (instead of pay at the pump )

Tell the attendant exactly how much you would like to fill in.
This way the card will be authorized by exactly that amount.

I believe this is also in the "read me" of the AMEX gift card.
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