Are we talking about an average $-cost-per day in smoking or in purchasing ??
My purchasing tends to rise and fall, depending on a combination of what's available at what price and for how long factored against my need and budget. So, there are weeks and even months where I do little if any purchasing, and other weeks and even months where my buying goes ape-sh** ...
My burn rate is fairly uniform, however ... typically 2 a day during the week, 3 and occasionally 4 per day on weeekends and holidays ... averaged out, I figure I'm smoking between 2.25 and 2.5 cigars per day on an annualized basis ...
Cost per day? ... well, inflation is constantly driving all costs higher and the average qualtity of what I'm smoking seems to be rising so I'm spending more in a day now than I spent in a week or more "back when" ... but then, I guess that's one of the hazards of growing older.