This document discusses product life cycle costing. It describes the five phases a product goes through - introduction, growth, maturity, saturation, and decline. For each phase, it outlines the typical costs, sales, profits, competition levels, and marketing strategies. It also discusses how to calculate total costs over a product's entire lifecycle from design through withdrawal. This includes factors like acquisition, operating, disposal and hidden costs. Tracking product life cycle costs provides a framework for managing expenses throughout the development and sale of a product.