 Depending upon what type of voice you want, you're going to spend a little bit more per million characters. Google has similar pay-as-you-go model. It's called Google Cloud Text-to-Speech. And then there's also Speechify. Now, I haven't looked at Speechify. I haven't looked at Google Cloud. But I have heard, like I said, my friend's audio book that used Amazon Polly. Excuse me.