I guess I'm glad I'm the one likely to be counseling a sixteen year old with an unwanted pregnancy. 

No one, not even the writers of the article, think late term or post birth abortions are a great options. Its very unlikely that any mother is going to bear a child and then have it killed because she thinks its going to be to expensive. She is (hopefully) going to know its expensive beforehand and abort, like many women currently do at early stages.