From the weekly Our365 email I get about my baby's development (courtesy of the people who took newborn photos in the hospital):
Yes, of course. You'd find it right next to the gallons of blood and sperm.
First of all, we don't package and sell breast milk as if it were, say cow's milk. It's distributed by donor milk banks, you know, same as we do with blood. And sperm.
Because there are so few donor banks (and the requirements are so strict -- I can't donate milk because I'm on antidepressants that are safe to take while nursing, but those meds prohibit me from donating), and because the fees to use donated milk are so steep and insurance companies put so many restrictions on who is "worthy" of receiving the little human milk there is available, some moms contribute to programs like Eats on Feets, or share their milk informally with a mom friend in need.
Yes, there have been instances of moms asking for a fee for this service (I don't have any links, but I saw people asking about it on one of the birth/parenting Facebook pages I follow, so it must have happened, at least once...), but it's not a money-making business, as Kristina C. makes it sound. It's "donating breast milk," not "selling" it.
And, Kristina C., if you're going to use an analogy... well... use the analogy. We donate and distribute human breast milk same as we do human blood or sperm: through banks, with medical screenings, and you must apply to receive the product. We don't sell blood or sperm at Stop & Shop either, so if your child is bleeding out after a car wreck, are you going to refuse the blood transfusion that could save hir life?