Being a parent is expensive. Being a criminal is also expensive, whether you lose economic opportunities to avoid apprehension or spend money on your defense if apprehended or go to prison and lose everything and, marked as a felon, emerge unemployable. Abortion is an economic issue, because when it’s not legal, those are the two remaining options, leaving out being dead, which you could argue is either very expensive or absolutely beyond the realms of money and price.
Well, there’re also contraception, chastity, other options. But those wouldn’t allow the rhetorical trope being employed, would they?