If you are really that concerned about the price per ounce of your craft beer buy a kegerator for the garage or wet bar. Start buying 1/6 kegs of your favorite current brew and you'll never look back. Then you don't have to worry about those 11.5 oz bottles.
Most "craft" beer or European beers are sold in a size based off of their alcohol content. If you go to a bar and buy a beer w/ 9.5% alcohol they typically won't serve it in a 12oz glass...you'll get shit-faced thinking "I've only had 4 beers" (when you've had the alcohol content of 8-10 "regular" beers).