You can also do that if you are rushing to get a plan created. This will make your job a lot lighter because with a template, you would just be filling out a form. No need to think that hard and you can also make sure that its content is complete. Since the person who made the plan previously have revised it several times, it is sure to be accurate.
The marketing plan template saves you the development cost of trying to develop a marketing strategy by trial and error. The template gives you the steps that someone has successfully used to create income online.