That was my thought as well.. I don't think the majority of tasks will wind up much under $10/hr for most people. Only Amazon knows what the average person is making in an average hour of turn around time though. It would be interesting to find out though.
Spend some time on mechanical turk.. the average transcription task takes a surprising amount of time to complete. I type 70-90 words per minute and a 30 second transcription might take me 5-6 minutes, due to having to replay parts over and over, and deal with formatting it according to the requirements
