The article was originally published in December 2005, and since that time, the wine box cover has disappeard from the shopping sites (Target, Marshall Field's, Amazon). This cover is an item that apparently fell flat rather quickly.
If it is that important to "dress up" the box, I can think of easier ways to do it. A decorative fabric cover, for instance.
I had the sales copy and photo in my files, so for what it's worth, this is what it looked like:
Our stylish stainless steel holder is designed to cover boxed wine but still allow access to the carrying handle. Good Wine, Good Friends, Good Times is etched on the front. Fits most 5-liter boxes. 10-3/4Hx4-1/4Wx10-1/4D.