Amazon argon wine saver spray.
http://www.amazon.com/Private-Preserve-Wine-Preservation-Spray/dp/B0000DCS18
N2, CO2, Argon
I buy the 3-pack but it's cheaper at my wine store locally.
I can't back this up with science, however I have had good results with making large batches of wine reductions and then storing them in that walk-in. I dunno about years, but it kept for well over a month. A lot of liquor stores sell smaller bottles of wine, usually they aren't really a vintage worth speaking of (same problem with boxes, although a lot of the nuances of flavor are lost in the reduction, you still don't want to cook with anything you wouldn't drink). If you want to use a wine worth bragging about there are different ways to keep the wine from oxidizing(?) or whatever ruins it with a can of something or a whole 300$ system which I guess is cheap considering what some people pay for wine.