When smoking schwag, which I mainly did up until a few weeks ago, I go through around 3/4-1 oz per week. When smoking chronic I go through around 2-3.5 grams per week, depending on the week and how much money I have.
I usually smoke 3-6 times daily- an hour or two after getting up (I wake and bake a few times per week too), then in the early or mid afternoon, before dinner, and a bowl or three at night. If I'm smoking chronic almost all of it in a pipe, and an occasional bubbler bowl. If I'm smoking schwag almost all of it in a bubbler. When I've got schwag I also roll up a personal blunt or every week and smoke a few blunts or joints with friends.
It really depends on the week though, a few months ago I was smoking 6-15 bubbler bowls daily. It varies. But generally, I smoke what I can afford to smoke and what I want to smoke. Which is a bit less than 1/8th per week of the good stuff at the moment.