Expandable CD "wallets"

How come I can’t find an expandable CD carrying case? I want something like a three-ring binder to hold X number of those 2x2 “pages” of CD slots. The only ones I can find have the pages bound in, so I can’t rearrange them, or carry fewer, or carry more, or whatever. As far as I can tell, there IS no such thing. Am I the only person who thinks this would be a good idea? I tend to carry 200-300 CDs around with me, and I’d like them to be easier to organize and manipulate.

Any clues? Any suggestions?

Here is a cd binder with removeable pages, or you can buy just the pages themselves and put them in your own 3-ring binder.