My pal mike found a deal searching the web from a terminal in Seattle, WA. to a moto dealer in Charlotte, N.C. for $600. Other than the price and it was shipped on its own pallet I don't know the particulars.
U-Ship can be cheap if you're flexible on pick up / drop off dates,times and locations and willing to make concessions on loading & unloading. The easier and less out of the way you can make it for the driver the better your chances of getting a lower price. We did it four times from the mid west to the pacific coast for around $500 each time.
Air Canada is screaming deal for coast to coat at Northern Lat's. You and the bike from B.C. to Ontario for $1,500 CDN when it's all said and done.