In CO, as mentioned by someone before, we have the "co-op" livestock shares system if you want raw milk. But there aren't any really nearby me, soooo....
I used to pay $8/gal for goatmilk from a local lady with a few does.
Now I switched to a couple who raises Nigerian dwarf does for show and they sell them all over the US! So the milk is sort of an afterthought, I guess?!?! I pay $6/gal from them. And those goats live in a goat Hilton, I swear. They have a nicer pen than my house!
To buy milk in the grocery, past/homo milk is $4/gal, plus the heavy cream to counteract the homo is another $7/half gal (I buy the REAL heavy cream, not the UP stuff with thickeners added) - so raw milk is much more economical.