Based on the information provided, the most affordable audio transcription service that also offers high quality results is likely Scribie. Scribie offers both manual and automated transcription services, with their manual service offering a 99 accuracy and readability rate and a 36 hour turnaround time. Additionally, Scribie's pricing is competitive, with a cost of $0.10 per minute for automated transcription and $0.80 per minute for manual transcription. While there may be other transcription services that offer lower prices, Scribie's combination of affordability and high quality results make it a strong option for those in need of audio transcription services.