Thanks for the props,
It's hard to say how much because i've always got a different amount of plants flowering and i do a staggered harvest. But i'd say i probably get on average 2-3 oz dried and cured a month + loads of popcorn & trim. Although this month doesn't look like i'll pull quite as much.
It's all about how much work\effort\seeds\clones you put in though, I only ever have maybe 5-10 plants flowering at any given time, my room could probably handle about 3-5 times that much without getting too cramped. I'm not a seller though, this is just a grow for 3 people and hangers on.

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My "Journal" When do I harvest? a no bullshit approach.