2 Comments ??? Bring on the cartons: Box wine, since it???s too awkward for most store shelves and because consumers are confused about its quality, has been little more than a niche product in the U.S. But all that may be about to change with the news that E&J Gallo will sell a $20, 3-liter box called Vin Vault, which works out to $5 a bottle for something that will be the quality equivalent of $