On a David Pogue video he said it would cost $200Kingfisher,
Dude, os x voice recognition is no picnic. I haven't tried it in leopard, but in tiger you had to speak pretty clearly and slowly. Wasn't really worth it.
However, I am looking forward to Dictation. I think that's what it's called. It's Dragon Naturally Speaking ported to os x. To be released soon. I hope it's not too 'spensive, though.