It is expensive and time consuming to produce a Traditional eLearning course. Estimates to produce a traditional eLearning course can range from two to four months using a team of four professional course creators. A Traditional eLearning course, including simulations, may take 220 to 2,500 man-hours to create. Companies tend to find ways to leverage Traditional eLearning courses due to the high production cost. Many companies buy pre-built courses on generic business topics like management training, financial training, or time management. Companies will create Traditional eLearning courses on projects with large budgets and long leads times, like a major product release. Projects that need extensive simulations like industrial control systems (think flight simulators) are good candidates for Traditional eLearning. Also, training with long shelf life like a company introduction may be a good candidate for Traditional eLearning. Due to the high production cost of traditional eLearning, it is typically expensive to change content in an already produced course Traditional eLearning is usually created for material that is static. Content that needs a lot of collaborative expertise to develop like specialized graphic simulations or programming are also good candidates for Traditional eLearning.