MacMall offers the Swissgear Sherpa DX 16" Laptop Backpack, model no. 28016050, for $24.99 plus around $8 for shipping. That's the lowest total price we could find by $23, although it was $5 less a month ago. It features air-flow back padding, comfort-fit shoulder straps, and foam-padded compartments for laptops of up to 16" and tablets up to 10".