I don't know about running cost but there's already a commercial system intended for restaurants etc. called Enomatic. It differs in being continuously attached

I don't know about running cost but there's already a commercial system intended for restaurants etc. called Enomatic. It differs in being continuously attached to open bottles, but it has multiple taps per device. Comparison here: http://www.thedrinksbusiness.com/2014/05/is-coravins-new-wine-sampling-device-a-game-changer/ http://www.thedrinksbusiness.com/2014/05/is-coravins-new-win...