We do our best to quote prices as accurately as possible. It is not possible to know the extent of the mastering required until the engineer has listened to the material and evaluated the mastering process. It is for this reason that the prices we quote are an estimate only. The custom mastering requests boxes are for you the client to describe any editing and EQ requests you may have. The more information you supply, the more accurate the quote tends to be. If further charges are to be incurred once the mastering process has begun, the client will be notified. Also, all shipping charges are the responsibility of the client and will be added to the total once charges are determined. There is a $100.00 deposit required when booking a session, and the balance is due the day of the session.