http://www.amazon.com/Economics-Paul-Krugman/dp/1572591501/sr=8-5/qid=1167400592/ref=pd_bbs_5/104-5649420-4669502?ie=UTF8&s=books
Krugman should practice what he preaches and sell his economics textbook for $10 so the little people going to college can afford it.
$140 for a textbook?
Unless Krugman self-publishes, I doubt he can do much about the price.