I think what Upak seems to do is to contract out the receiving-end of the job to localized places.
At least, this was my experience in my city. My impression is that when they get a customer enquiring and signing up to have UPak take care of shipping the stuff, that's when the Upak agent will look it up and tell you where the nearest company they use in your area can be found.
I could be wrong, perhaps UPak do have their own places in certain key locations in the nation, but otherwise I think they just subcontract customers' local companies.
In my case, I lived in Austin TX, and they told me I had the option of taking my boxes straight to a Houston company right by the shipping port, or to an Austin company that would truck it there for me, having first pallettized it themselves, for a slightly higher UPAk fee. Both places I'd be taking it to were kind of sub-contracting businesses whom UPak habitually used and deemed reliable.
So it might not be "The UpakWeShip Branch!" on Main Street, Boisie. Instead it may be that you will be referred by UPak to "Bill Bailey's Warehouse and Trucking" --just a local business that do contract work for UPak and whom Upak has found to be reliable.
Don't be alarmed by the idea of this sub-contracting -- the guys at the Austin place I was sent to were fantastic, and they took care of my pile of boxes even while I stood there in this huge warehouse place with trucks outside, watching them start to shrinkwrap the formation.
