abn505 said: NADA has it listed for less. What would be a reasonable price?
If you are looking at the NADA "retail" price, then offer him that.
What's your background, mechanics wise ??.....and riding experience ??
I guess if you had a lot, you wouldn't be asking, huh ??

You should see it start COLD and get a good test ride; if not you then someone you know who rides.
And **ASK** if there is anything wrong with it and if it has been wrecked. A lot of people will neglect to mention "things" but won't outright lie about it.
In addition to the things you listed, chain and sprockets can be a fairly major expense; brakes a minor hassle but not too expensive.
You can never be 100% sure you aren't getting a lemon but if it starts good, runs good, doesn't leak fluids and looks like it's been cared for relatively well........you can't go TOO wrong for less than a grand.