eBags offers the JanSport Elefunk Messenger Bag
in six colors (Blinded Blue Hippy Skip pictured) for $29.99
for shipping. That's the lowest total price we could find by $6. It measures 16x13x5.5", and it has an internal pocket that holds a 15" laptop, side mesh water bottle pocket, padded back panel, adjustable shoulder strap with removable pad, and more.