These estimates are based on ICv2 estimates of comic sales by Diamond North America during May 2011. We are estimating actual sales by Diamond U.S. (primarily to North American comic stores), using Diamond's published sales indexes and publisher sales data to estimate a sales number for
Batman (the anchor title Diamond uses in its calculations) and using that number and the indexes to estimate Diamond's sales on the remaining titles. We can check the accuracy of our numbers by comparing the
Batman number that we calculate using multiple data points; our numbers for
Batmanwithhin 1/10 of 1% of each other, ensuring a high degree of accuracy. They do not include sales made by Diamond UK, orders on these titles placed after the end of or copies purchased by Diamond but held in inventory at the end of May. This information may not be reproduced in any format without also crediting Diamond Comic Distributors, Inc.