They discontinued making them. There are some people selling them on ebay, but they're at an INSANE cost (I saw some for about $20 on there). I ended up finding a small, six ring binder at Big Lots recently, as I had missed out on the Stickopotmus binder myself. It was one of the Mead Five Star ones that had originally been a daily planner (pretty much any six ring daily planner-type binder will work). It only cost me $3 and they had tons of them to choose from. Plus, it's nice because there are some extra little pockets and it zips up the side. Features that the Stickopotamus ones never had.