Joe’s Sporting Goods is having a one-day 25% off sale all Filson products, with free shipping to boot on orders over $75. That puts the Filson 257 at $206.25 and the smaller Filson 256 at $168.75. I have the 257, and there’s ample room to stuff almost anything you might need in there. If you just have a laptop and a few books, the 256 may serve you better.
(Thanks to tcmorris for the tip)