Hi there.  I'm quite interested in purchasing your bike?
Great, It is in great condition and is a 10 speed. I only used it a few times.
What did you pay for it when you bought it?
It was 1250 when I bought it. 
It sure looks like a nice bike.  What do you want for it?
I am asking 800 but I am open to offers!
How about $736, and I will also pick it up?
That sounds really fair and since I do not have to deliver it I will let you have it for 700.