Are Children Really Expensive?

Here is an article on people not having children due to the bad economy.
In the article they have this “Children are really expensive,”

But are children really expensive?  I once worked with a single mother (she had a very low income BTW) who said “children are cheap. If you have $20 left over at the end of a week you have enough money to have a child.” I believe her. I think that most children are very cheap to have and raise, some are very expensive, those with health or behavioral problems but you can spend as much or as little as you want on an average child. The extra money we spend on them yields very little. 

As the article notes down a little lower it is risky to have a child but still people should be told that an average child is cheap.