The answer to this question is: A LOT! I thought I would take a pic of what I carry in my purse. These photos exclude my pens in a rubbermaid container in my office, in my desk at work, and in my desk at home.
Most of these pens are from jetpens, but a few have been purchased at a pen store in the mall or at department stores. The pencil bag is something I picked up at the local university book store a couple of years ago.
The case is pretty full, but I could probably fit a few more in....
Pepino was very interest in pens today as well and watched intently as I laid them all out. I have some Gelly Rolls, brush pens, Pilot Choose, Slicci, G2, Zebra Sarasa, several Preppy fountain pens and a Lime Green Lamy, Hi-Tec-C multi-pen, Tradio, Uni-Ball Signo, Pentel Hybrid Technica, and a few others... I am not sure I have enough pens to do reviews about. I better do some pen shopping just to be safe.