I'm sure there are lots of ways, as you suggest. Here is a reliable source in a town near me. This guy has been selling and repairing FWs for decades that I know of. I'm sure he'd ship. He is in Keene, New Hampshire.
http://www.themoseshouse.com/sewing_machines.htm Wow, I just clicked on his sewing machine link from this page and he has some very good deals. He is totally upfront about each machine and if you don't mind some wear and tear, he has some very cheap. Or spend a bit more for a perfect one.