Not sure what you found Noir, but yeah from my experiences it's expensive. We shipped our Boxster (which wasn't running at the time, so granted it needed to be "towed") about 100 miles and it was around $250-300. About 10 years ago my buddy shipped a running car a pretty far distance (1000 miles or so) for about $400 - with inflation that would surely be more like $500 today.
Glad you're getting closer!