Newegg offers the Eco Style Sports Voyage Backpack in Black/Blue, model no. EVOY-BL15, for $24.99. Coupon code "EMCPEHA75" cuts it to $17.99. With free shipping, that's the lowest total price we could find by $18. It accommodates laptops up to 16.1" and features a key fob, phone pocket, pen/pencil organizer, and retractable water bottle holder. Coupon ends May 31.