If you get lucky you can ship it via Amtrak. Need to have a station near you and one near the buyer But if you do it is relatively inexpensive and very easy, take the pedals off, turn the handle bars, roll it into the box and tape it up.

That being said...I box my own and ship via FedEx. I use foam pipe insulation to pad the tubes, and put blocking in the drop outs along with stiffeners across the box to guard against crushing. Takes me a good 3/4 of an hour to pack a bike for shipping.

Aaron