Once we establish the extent of any given job we can supply an estimated cost based on the number of hours the job should take and the type of work involved. If the job looks likely to exceed the quoted hours, or if the type of work changes (for example if extra research is required before some text can be written), we contact the client in advance to explain why and what the estimated extra hours/cost will be. If the job comes in under the quoted time, the client is only charged for the number of hours worked. (Please note that Penhire does not charge for internal editing or extra time spent on a job as a result of our own inefficiencies, whether technical or creative).