Hi, I'm interestsed in this typewriter. Can you tell me whether it has ink and works effectively beyond just powering up?
Yes it has ink, powers up, and does what it should as it is in excellent condition. 
That's great. Would you be willing to sell it for $25 if I come pick it up?
No I'm sorry I can't go that low because it is in such great condition and comes with everything needed.
What about $30 if I make a deposit in advance?
Again I am sorry. I got an offer already for $75, but because I like you I could take $55. But that is as low as I can go.