I get mine from my local feed store, which really surprised me (that they would even have it). You can also order it from Countryside Organics. You don't need to use a lot, so it'll last a while, making the shipping charge not seem so bad...
Thanks. I found a local feed who has a supplier in central California called Modesto Milling. They are producers of organic feed. This will save on the shipping charge. They will special order and will arrive along with normal weekly delivery.