You can also find LTL (less than truckload) carriers that will have better rates for heavier shipments. Things over 25lbs. You may be able to find rate in the $.50-$.60/lb depending in destination for 2-3 day service
Your also better to drop it off or partner with a business that has a loading dock. YOu can get hit w/ extra fees like required tailgate ($35), etc...
Yellow, Roadway, BAX Global etc... are just a few companies with good nationwide service