Amazon offers Prime members the Targus Trek Laptop Backpack in Black, model no. TSB193US, for $14.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $8.90.) That's the lowest total price we could find by $19. It measures approximately 13" x 8" x 19" and fits up to a 16" laptop. Features include a padded back panel, adjustable shoulder straps, cell phone pouch, and key ring clip.