Last week I received an email from a friend who was in a bookstore in the Tulsa OK airport. He found the IBM Press book "Can two rights make a wrong". Not many IBM Press books end up in bookstores, especially in airports, because they are not considered mass appeal books like a Microsoft books tend to be. But maybe this is a start!
So instead of looking for DB2 or IBM books in bookstores, try some of the great online bookstores that are available that tend to offer greatly discounted prices. Some of my favourites:
United States: http://www.ibmpressbooks.com(At checkout time, uUse the coupon code IBMSALES to get a 35% discount.)
Canada:http://www.pearsontech.ca/db2(Always a 30% discount)
Europe http://www.pearson-books.com/ibmpressbookshop/ (Always a 35% discount and free shipping to residents of EMEA.)
India:http://www.prakashbooks.com/(Search on DB2. Prices in local currency for residents of India.)