[Christ]

Probably not going to be what you want to read, but I'm going to say it anyway -

Buying something newer (or with less miles) is almost never a better deal than just sticking with what you have and fixing it up.

Do you have a bike already? Can you do anything to make it more fuel efficient? Could you possibly sell it and/or trade it to someone for something they have that is more efficient? Remember, most guys on bikes are going to want something bigger, with more power... If you have that, let them take it. Take their "first bike" and spend your maintenance fees on it to get it into shape. Take care of it.

Unless you really like the CBR250, I wouldn't buy it new. There will be plenty available for half price in a year or two, if you're still interested.