Product development is the complete process of delivering a new product or improving an existing one for customers. This book is intended to cover significant approach to estimate the cost in the new products development. In the process of new product development, it should not be thought that the change will only be on product physically but also on every aspect of the product. The new product development (NPD) literature emphasizes the importance of introducing new products on the market for continuing business success. Its contribution to the growth of the companies, its influence on profit performance, and its role as a key factor in business planning have been well documented.