[Daniel_Newby]

> You all know client work involves last minute changes and lengthy email discussions.

For which they should be billed. By the hour.

If they want a fixed price contract, they can go elsewhere and find a job shop that will never go the extra mile when the time runs out. Emphasize the value proposition you bring by providing in-depth professional services. Emphasize the fact that your extra billable hours are pay-as-you-go: every time something gets worked out, they are getting proof of just how much you are worth.