Walmart offers the HP Ultra Mobile 16" Notebook Backpack, model no. WW866AA#ABL, for $9.88 plus $2.97 for shipping. (Free Site-to-Store shipping is also available.) That's the lowest total price we could find for a comparable HP backpack by $35, although it was $2 less last week (since expired). Sales tax is added where applicable. It features two side accessory pockets, adjustable shoulder strap, and support for most laptops with screens up to 16".