Hey there, you're interested in the road bike? She's a beauty.
Yes, I am interested.  How much are you looking for it?
Well list price is 700, I could tell you more about it if you'd like, what's your budget?
I was looking to spend about $600.  Is there something we can do at that price?
There is. Can you come pick it up? I custom-made it so it's pretty reliable and excellent.
I can come pick it up for $600, sure.  Deal?
deal
Great.  Thanks!