He didn't say he buys a pound at a time, just that it's priced $25/lb. Nor that his "cup" (colloquially) was 6 oz in size, though for some reason coffee machine

He didn't say he buys a pound at a time, just that it's priced $25/lb. Nor that his "cup" (colloquially) was 6 oz in size, though for some reason coffee machines do seem to define their "cups" as 5 oz, coffee prep directions are always related to 6 oz., and the American unit of measurement is 1 cup / 8 fluid oz. (I assume we're discussing America here, because everyone else measures out their coffee in grams). Using my mug - which I describe as my morning cup of coffee/tea - of 12 oz., buying a half-pound at a time, the "average" age of the coffee is now a couple of days. If the entire strength of your argument goes away on the basis of tweaking a couple of variables by reasonable degrees, you should probably reconsider the argument.