Though we're not arranging group buys out of Dunkirk Homebrew, you can still call down there to inquire about what kind of deal you might be able to get on bags of grain. Steve is in shop Mon, Thu, Fri, Sat and is the one who'd be able to determine that. Mention that you were referred from this thread.
So, if you don't want to wait for a buy to come together, and/or want to choose from a larger assortment of grains, take a look at
http://www.dunkirkhomebrew.com/ and see the "Grains by the Bag" page.
Transportation not difficult to work out. It's an easy trip, and we also fairly often have folks in Hamburg on Monday nights. Can bring a few bags up.