For $10, I'd expect above 99% accuracy, especially since I can get an automated transcript for $5 for 60 minutes that presumably has a similar error rate to what you are offering.
Also, I'd expect it sooner than 24 hours, since I can get automated ones back in under an hour.
Not trying to be cold water. I am actually interested, but what sets you apart from the other cheaper automated solutions? Am I wrong about the error rate I can expect elsewhere?