MacMall offers the Wenger Swissgear Upload Carrying Case Backpack in Black, model no. GA-64081001, for $17.99 plus $6.29 for shipping. That's tied with our January mention and the lowest total price we could find by $4, although we saw it for $2 less in December. It features a carrying handle, multiple compartments, and room for up to a 16" laptop.
This tropical nation is practically perfect for anyone open to leaving the U.S. in hopes of dramatically cutting costs.