Looking to buy an '06 Suzzuki S40.?

I am looking at two bikes... both are '06 Suzzuki S40's. The one from the dealer has 25k miles on it. I went in there just looking about a month ago and saw it and it is still there. The price listed on it is $2,750 but they have already brought it down to $2,000 if I will buy it. Sounds fishy like they are trying to get rid of it because no one will buy it. The onther one is in the paper. It is the same bike same year but it has a little more than 2k miles and I would be able to meet the owner so I could have an idea of how it has been treated. The price listed is $3,000 also he is going to throw in the helmet and a jacket. First do you agree that the dealer one sounds fishy? Second how much do you think I can get the one out of the paper for? Maybe start at $2,500 or start lower? Also 25k is high for that model isn't it? This will be my first bike so I am torn between what I know will be a good low maintenance bike and one that will be really cheap. Also do you know the mpg for them?