Typing Audio recordings to word

I have about 11 audio recordings that I need typed up (to make a transcript). They are each approximately 12 mins long. I will get a further 8 or 9 audio recordings this week. So about 20 in total (12 mins each). Ideally it would be good to get most done sometime this week and the rest done early next week if possible. Can you help? Let me know how many you can do in an hour / rough overall price. Thanks, Ray