Just don't get your hopes up. I've had people drive from Columbus to here (100 miles) to look at a car then lowball me badly. I had a guy come look at my Fiero I had for sale for $1200, and he lowballed me asking $300. He then proceeded to argue with me saying that it was my fault that he wasted his gas even though I said not to lowball me or don't bother coming.
Just remember, always take in thought that they may show up with $2000 cash and try to lowball you.