The whole growler thing doesn't really work for me.
I mean, once you start drinking it, you have to finish it in a day or two, right? Between my wife and I, it usually takes us a week to get through 64 ozs of beer (mind you, we tend to favor the bigger 7-12% abv sippers.)
And the prices, at least at Whole Foods, oftentimes are more than if you just get a six pack or bomber.