Hi there are you interested in this item?
Yes, absolutely.  I do some handy work on the side, and it'd be good, but it looks like it has a lot of miles on it.  Can you work with me on the price a little? 
Yes we can work on that. How much are you willing to pay? I can accept $8500 
I was thinking close to $6000, so maybe we can meet in the middle?
Well the last I can do is $7000 you're getting a good thing for that price. WE both know what the price in the market is. That's about what I can do. 
$7000 sounds fair to me.  Can I pick it up this week?
Yes sure. Text me your number and we can go about that right away! THanks!
My pleasure.