Bag-in-box wines offer a number of advantages to the consumer. They are good value, convenient, lightweight, easy to store, unbreakable and especially great for outdoor activities. However, there are also disadvantages such as being big and bulky to serve at table. Also, compared to a bottling unit, the packaging technology is quite complex. The bag inside the box needs to be both flexible as well as a good oxygen barrier. This combination is not always easily attained. Additionally, 'bagged' the wine has a max shelf life of about nine months, after which the wine starts to lose freshness and deteriorate. So unless you know how long the box in your local store has been hanging around, it is hard to calculate how much more shelf life it has.
I'd love to hear your experiences with bag-in-box wines. Mine have been quite mixed. Some good, but there have also been many oxidized wines. In principle I think BiB is a great packaging alternative, and certainly has a future, as wine becomes part of so many more of life's occasions and activities. FYI - The Norwegian wine market is run much like our own control states, in that all retail outlets are owned by the state monopoly Vinmonopolet. So until next week, enjoy. Mary