We've bought our first box of wine! 5 litres in one go, all dispensed via a very efficient plastic tap. It's such good value that it is cheaper than buying water, but it does make the toothpaste taste funny.
The Auvergne region isn't famous for its wines but there is a town called St Pourcain which produces very decent wines which are excellent value. They have a large wine shop called 'La union des vignerons'. What I like most about the shop is instead of having baskets for you to put your wine into they have the kind of large, flat bed trolleys that you might find in a Big Yellow storage facility. I like their optimism.