On the surface, it's easy to predict what a project will cost. Take the hardware required, add it up, and there's the amount needed, right? We all know it's not that easy. There are other factors involved in predicting the cost of a project.
When predicting the project expenses, a project manager has to look at employees, the combination of employees working together or alone, hardware expenses, the determined scope of the project, and the necessary hardware to implement the plan. The total of these variables make for long planning, calculating, and educated guesses as to the expense of a project. Careful planning and experience are the two best ingredients for cooking up an accurate budget.