OK, seems like they're a little misunderstanding here. Growlers are larger glass containers (think big grolsch bottle), usually in 1/2 gallon or sometimes smaller quart or 32oz which are reused. Breweries will have growler fill stations which are basically limited (or not) brews that they have on tap where they will fill your growler. It lets you basically take home some limited (or not) beer. They don't sell growlers with particular beers. Think of it as buying a thermous that you clean out and bring to the brewery or beer store and have it filled with your favorite concoction. Properly sealed (putting the cap on), your beer will be fine for a week and a half two weeks easily. They actually have 3 growler fill stations at the whole foods in Fair Lakes VA with 10 different beers at all times. Last time I was there they had the Oskar Blues Gubna. Sooo, I'm almost 100% sure that no one carries any of the bourbon barrel's outside of their brew pub. You would have to get it there either by glass (dont' even know if they do growlers) but they're definately not available in the can. TenFidy's around where ever they carry the oskar blues brand but they sell out pretty fast. They have em here in DC/VA in the 10.99-11.99 for the 4 pack