Send the machine by Greyhound bus. They will take a package up to 50 pounds. Get a plastic tote and 2 new bed pillows. Put a pillow in the bottom of the tote, then the machine laying on its side topped by another bed pillow. Put the top on the tote and seal all around the top with duct tape and run a few straps of duct tape around the outside of the tote to seal it securely. I sent a 130-6 from TN to Los Angeles, CA. It arrived in perfect condition.
The thing with Greyhound is they don't switch buses - they switch drivers. Once the tote goes into the belly of the bus it stays there until it gets to its destination. It is also very affordable. Their website gives all the stations that have package service.