Hi, I've got this great bike in excellent condition for $1250.  Are you interested?
I am, but I think that's a bit much for a used bike. Would you go lower?
What price did you have in mind.  It's a really great bike, so I don't want to be lowballed.
How about $1000? I can come get it right away.
If you can pay $1100, I will deliver it to you.  Deal?
Deal.