<prompt> Human: I currently have two children, and my wife wants a third. Im scared to death of the cost, based on what I see online and in the news. However, no articles say If the average cost takes in to account multiple children, or if its just for when there is 1 child. So, whats the group discount for the third?  <response>: Here are the first few Google search results for Marginal cost of children : 