Filson had two huge price increases in 2013. I have a feeling sales dropped off a bit, so for the last year, Filson has been making bags out of cheaper material and charging a higher price for those bags than their original counterparts. This is a clever way of increasing revenues without increasing prices. Or, they've been "bringing back" old favorites but are using cheaper materials.
As an example, the newly re-released Outfitter Bag, a wildly popular product when it was discontinued, is now made of shelter cloth and rugged twill rather than just twill.
Belts still cost the same, but they now have plated brass buckles over steel rather than solid brass.
Tin cloth briefcases with nylon straps cost more than their leather and twill twinners.