Hi..
Hello, I'd like know more about this quadcopter. How much for it?
well it is great truly unparalleled precision , I am asking $85.
Hmm, 85 is a bit much for me. Could you go any lower?
I am willing to work with you on the price.. how about 75?
75 is better, but would add in an additional discount if gave a product and seller review and picked it up?
perhaps, how much more are you thinking? 
How about a final price of 65?