Through 12/23, for every $50 Staples e-Gift Card you purchase, you'll receive a free $10 Staples e-promo card via e-mail at Staples.com. This ties with our mention from June, which works out to a 17% discount on these cards. The gift cards can be sent to a friend, or yourself, and the $10 bonus e-promo card will be sent to the e-mail address used to make the purchase. While the $50 e-gift card never expires, the promotional $10 e-promo card is only valid for purchases made between 1/1/14 and 1/15/14. Both cards are for in-store purchases only. There is a limit of earning four $10 promo cards per person, which are limited to one per transaction during the redemption period. There is no sales tax.