Go to uship.com and put in the info, most respond immediately. Freight is hugely variable, someone may have a backhaul
going that way (though completely coast to coast isn't common) and you'll get a deal. Yellow has been good to us for bringing
stuff in from elsewhere, but that's the logistics of living in an export area. Outgoing is usually much more and they are usually
all about the same, to within pennies even.
Watch putting too many boxes on a pallet though, anything hanging over will get crushed, and if it's too tall and topples
you're sol.