That is a beast and it is indeed one of the most gorgeous bikes ever made. It may be a little shocking at first how different it feels than a Honda or anything else. You just have to give it some time and practice. Some love the feel and raw power some can't figure it out.
Once you get it, you'll be back here with more specific questions I'd guess and there are lot's of super experienced folks on here. The search box up in the top right is your friend btw. You can find all kinds of great threads.
Dealers tend not to negotiate too much. You prolly won't get it half off or anything like a Japanese bike.
If it's a private owner... I'd take it to a Ducati service and have them inspect it or call the Ducati service that that bike got serviced at and ask about it. If it was taken care of and all the maintenance was done on schedule, someone knows that bike inside and out. If they have no service records and that kind of thing, well maybe a pretty bad sign and a risk if it has a lot of miles. If it has very few miles and few years, get to the bottom of the story. Could be a good deal.