If you can't do $$4000,$ I have another forklift I can buy.

Response $2$ of $4$: Why don't we meet at $$3500$ then? Do you want me to keep going lower?Why don't we meet at $$3500$ then? Do you want me to keep going lower?

Response $3$ of $4$: That seems fair. You have a deal. That seems fair. You have a deal.

Response $4$ of $4$: If I do $$4500,$ what's in it for me$?$If I do $$4500,$ what's in it for me$?$