are there an wesites that can sell you just a tama (ball)?
Not, that I have found.
But you can try and send a pm to Mirek (from kendama.cz). He has helped me before...
send a e-mail to david. I believe you can find the link at www.juggle-store.com/ (http://www.juggle-store.com/)
he sales sunrise and sweets tamma's