If we accept a figure of $410 per abortion and that there are 1,200,000 abortions performed each year in the US, then there are 500 million dollars being spend on abortion itself. (That leaves out the post-abortion illnesses and possibly counselling.) We notice in that study that poorer people have more abortions than those more economically advantaged. I would make the assumption that poorer people have lower levels of education than the others. The stats on improper use of contraceptive devices seems to show that people try to use those methods but due to accident, ineptitude, sloppiness or misunderstanding the methods fail.