I'd say on a weekly basis, I go throuh around 10-14 grams of pot. Whenever I smoke with others I tend to smoke a lot more than I would on my own so it adds up. on a daily basis i probably have about 1-2g a day.
However, I consume cannabis in most of the available methods on a regular basis, including edibles, concentrates and tinctures, so that estimate was a crude tranlation of what the total cannabis content was. In flowers i only buy like 6-7 grams a week.