How can I assist you with the wood chairs? 
Can you tell me if they are in good condition?
They are in great condition! 
I'll give you 5 dollars a piece for them so 30 dollars total
I am very sorry. I cannot go that low. I am asking $50 for all of them. I could go down to $7 a chair. 
so 42 dollars for the set? Will you deliver?
That is correct! I will deliver! 
great sounds like a deal