When you sign up with us we'll start you off with 30 minutes free credit so you can try us out and satisfy yourself that we really are the most accurate service on the market. You can then top up your account to add extra credit at a cost of 9c USD per minute of audio transcribed and if you top up by $100 or more we'll drop the price down to 8c USD per minute. We charge on a per-second basis rather then in 15 second blocks or similar as we believe you should only get charged for what you use.