./6carbs

You could also use one of the 'if it fits it ships' boxes from the post office. There's 4 sizes and the boxes are free. Just need to pack them where the carbs don't move all over the place....and the prices are fixed for the difference sizes. The weight limit is 70 lbs last time I check. Whenever I go to the PO, I grab several at a time....just make sure you are grabbing the 'if it fits it ships boxes' because the regular priority boxes look the same.