Its currently 'expensive' ($3 per day) for the individual user level to run this but once you open it up to a one to many model, that's extremely reasonable.

Recording and editing the audio alone would be a massive expense and the code does this multiple times per day all for under a dollar.

But the individual costs will surely come down as models get better. I'm not sure what the plans are yet for it but I'm hoping to make it useful to people.