I have been a professional VO artist for over 30 years. Rates vary depending on use (national commercials, national TV commercials, local TV and radio, narration, etc.) For example, a web video or local spot would run from $75-$100, a 2 min national cable DR spot would run $250 while a national broadcast TV spot would run $400. Demo is available at http://youtu.be/EB5AX8jVmZU