Try facebook.com/bunjinkanweapons
They make custom ninjutsu weapons, but also cater to other styles. The guy has several lengths and shapes (6side, 8side, tapered, non-tapered, round, etc) for any measure of staffs.
He also deals with about 6-8 different wood types. His web domain isn't up at the moment, but shoot him a message and he may be able to show you some examples of his work.
I haven't had the privilege to purchase from him, but the few people I contacted seemed quite pleased.