Through 6/16, for every $50 Staples e-Gift Card you purchase, you'll receive a free $10 Staples e-gift card via e-mail at Staples.com. This is the first time we've seen such a promotion from Staples, 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-gift 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-gift card expires on 7/7/13. Both cards are to be used for in-store purchases only. There is no sales tax.