I am not advocating this deal, just putting it up for discussion, so no need to harsh me, beautiful people:

Purchase a $100 Chevron and Texaco Gasoline Gift Card and receive a FREE $10 Chevron and Texaco Promotional Gasoline Card!
Your Promotional Gasoline Card will ship together with your $100 Gasoline Gift Card. All cards will ship within 2 business days from the time of order. Cards will ship via USPS First Class Mail (no tracking number) and you will receive an email notification when your order has shipped. Please allow 2-6 days for delivery via USPS. Seller cannot guarantee delivery prior to the Christmas holiday. The Promotional Gasoline Card will have an expiration date of 2/28/2015. The expiration date will be printed clearly across the front of your Promotional Card.

More terms on the offer page.

Seller has NO history, and people are snapping these up. Multiples are apparently okay.