Lumber by the board footage includes the shipping costs to any state west of the Mississippi River, whereas lumber by the pack doesn't include shipping at all.
Why the Mississippi River? Our shipping warehouse is in Phoenix, Arizona. Sadly, the farther you live from us, the more it'll cost to ship to you. It's not personal. The Mississippi is basically a point at which the rates we incur increase substantially. That's why on these packs we add on a flat surcharge to destinations east of the Mississippi.