Try synergy [transcription services] for your transcription needs, they providing accurate transcription at cheap price.
So I've used:
TranscriptionStar – iSource solution Inc.before and they transcribed audio files that went with videos for about $1.25/minute (advertised $1.00 but it ran a bit higher). They did a good job although we had to go in and fix the engineering terms.
1291 Weber Street| Pomona |CA |91768
Their billing leaves a lot to be desired.