Believe it or not, the best solution, if you live anywhere near a rail line, is to get carload sent to you. Before you finish laughing, if there are any like minded individuals in your area, (say 10 or so), you may want to pinch your pennies (in this case, a lot of pennies) and go in together. You would have at least a 4-5 year supply on hand. I know a group that does this up on the Maine Coast and it has worked out well for them. Other than that, I don't know what you could do.