20% off one item coupon valid 7/28/10-7/31/10. Valid in Staples U.S. stores only. Discount applies to highest priced item, some exclusions apply. Not valid for the purchase of: netbooks and desktop computers, cell phones and cell phone services, BOSE or Apple products, gift cards, postage stamps or phone cards. Limit one coupon per customer, coupon must be surrendered. Each item purchased can only be discounted by up to one coupon. No cash/ credit back. Not valid on previous purchases. Not valid for purchases made with Staples procurement or convenience cards.