Example 10.1 gives the current cost for standard size and quality copy paper with varying levels of recycled material content Do further research to see what differences in the production of the paper lead to the cost differences EXAMPLE 10.1 Typical letter-sized paper purchased for use in copiers is of 20 lb. weight and has a brightness rating of 92, according to U.S. standards (100-104 Euro Bright scale). The online retail price for one case (5000 sheets) of Staples brand paper meeting these specifications in July 2011 was $39.99 for nonrecycled Staples Copy Paper.4 Costs for cases of recycled paper meeting the same specifications were $45.99 for Staples 30% Recycled Copy Paper and $55.99 for Staples 100% Recycled Copy Paper (this paper had a brightness rating of 90 US) The 100% recycled paper product displays the FSC logo of the Forest Stewardship Council, an international nonprofit organization championing forest management (including consumption) aligned with sustainability objectives. This example illustrates the impact that design for sustainability policies can have on a product's quality and cost. Describing the reasons why adding recycled content to paper increases its cost is left for a homework assignment