When pitching to a client or planning your advertising project, prepare a VERY detailed project outline. If you agree to ‘sell a website’ to a client at a set price, then afterwards the client wants more and more functionalities and options, if your project outline wasn’t very detailed as to exactly what the website would include based on the set price, then it will be very difficult to say ‘No’. If you estimate a project at $5K, and then decide to include additional functionalities which take take 2 days more to complete, you’ve lost money in the project.

Hervé Thevenard, Financial Controller for Ogilvy