Where could we sell breast milk?

We dont want to donate to the milk banks because in our area, they ask for donated milk and then charge the potential searchers an arm and a leg. We just want to sell $1 per bag (which usually contains 6 to 7 ounces). The reason why we want to sell it and not donate is for the milk storage bags we used to freeze the milk in (about 50 to 75 cents each) and the wear and tear on the breast pump. Other than that, we dont seek profit. We've tried La Leche League, Craigslist but they dont endorse selling of breast milk. We dont know anyone with low milk supply and it seems like a waste to throw it out. Do you know any websites were we could post to sell?