With the mistake on them, all "value" of your bike goes out the window. Don't get your insurance involved or settle on anything that really ends up costing you money. I'm not sure which dealer you are working with so it's hard to say how things could be handled other than with ducati.(maybe they have a tuono you'd like to ride, dunno)
Bottom line is, you could make money out of a lawsuit, you just want a bike. Again talk to the owner and ask how this is going to be solved, I think you'll be "made whole."
You have to keep me posted.
-Good luck.