GizGalaxy via Amazon offers the Case Logic 10.2" Netbook/iPad Attache in Black, model no. VNA-210, for $10.80 with free shipping. That's the lowest total price we could find by a buck. It accommodates laptops with up to 10.2" screens and features an accessory compartment, USB drive pocket, and removable shoulder strap.

Update: The price has since dropped to $10.20 with free shipping.