Picked up a twelve pack of Guiness' sampler for a reasonable $13.50 the other day. When I actually opened one and poured it, it seemed a bit short. Then I read the label: "11.2 ounces." Along with so many other manufacturers, Guinness manages to short you a bottle in a 12-pack and presumably keep the same price, while saying nothing about downsizing the bottle.
“Malt does more than Milton can / To justify God’s ways to man”
-A. E. Housman (1859–1936). A Shropshire Lad , 1896.