Gosh those rates are REALLY low. If they're charging a client $1 per audio minute transcribed what is the worker getting? If you can type at 80 wpm, it takes about 7 or 8 minutes to transcribe 1 minute of audio, obviously if the audio is poor quality or difficult to make out it will take a lot longer. So you're looking at probably $0.50 to $0.75 per audio minute, doing 8 minutes in an hour, at the very best you're looking at $6 to $8 and hour which is half of minimum wage.
One for the very speedy, very experienced transcriptionists only.