Alright, I've had it. I've searched all over the internet for weeks and spent some time searching and re-searching this forum, but couldn't find my answer. So I shall ask

I need to know how the other talented artisans get their paper!
Do you buy it on rolls? And where from?
I'm talking about the smooth finish, writing paper for a typical journal - no crazy art journals or anything.
I've found a website with pre-sewn text blocks, but prefer to sew them myself.
So what's the easiest, most economical way to get a whole bunch of paper?
(Up until this point, I've pretty much been using high-quality copy paper. Southworth resume paper and the like, 8 1/2 by 11.)
Or maybe I'm just being crazy, and there is no secret way to get paper? Maybe everyone uses those stacks of 500-sheet resume paper in ivory?
Please help!