Is Selling Breastmilk weird? It is legal in my state?

I am just wondering what are your thoughts on this topic? I have had all the slips from the doctor proving I have no sexually transmitted diseases and I am healthy enough to sell/ donate my breastmilk if I wish to do so. It is legal in my state as well. I see other women selling their milk from 1-7$ an OUNCE, which seems ludacris to me I know the milk banks charge a TON and that's why I wouldn't go through them...(you give the m your free milk and they sell it at a profit!!) I'd like to help someone who had a baby on formula that couldn't tolerate it well or something, how much would you be willing to pay for breastmilk instead of formula? I am thinking of charging by the 8 oz. bottle instead of just by the oz. keeping in mind that my babies have always ate around 8 oz. every 3 hours.