I wanna sell my clarinet for some extra cash and was wondering how much I would get for it but can't find anything on the internet about my make & model so can you guys help?

its a wood Selmer CL300 Bb

I don't know anything about clarinets, but there is a clarinet forum on this site, and you'd be better off there, because someone is bound to know about your make and model. Go up to Forums and click on clarinet.

you might get maybe around $500 just because its wood