Since the recession, people are saving money in all kinds of ways, including not adding to their family. The USDA reveals how much the average family spends, per child, from zero to 18. Sometimes, though, the baby trade-off can actually help your bottom line. And still worried about the cost of kids? You might consider buying used. (Well, maybe not everything secondhand.) Also, a Republican delegate shares the cost of being a delegate traveling to the Republican Convention.