Accuracy and timeliness of the prices notwithstanding, I find the OCBPG indispensable because, in one convenient location, I have all of the information I need about what titles have been published, how many issues are in a title and a brief statement about what's special about a particular issue. That probably doesn't change much from year to year but, when it does, those changes help highlight that there's a particular book that I need to start paying attention to that I might have previously overlooked. Then, using that information as a starting point, I can check up-to-date pricing on the 'Net. Even if OCBPG had 100% accurate pricing on the day it shipped, a month later it's out of date on some books and I'm going to have to check the 'Net anyway. For that reason, I'm not too bothered about the accuracy of their prices, as long as the relative pricing of the issues is accurate.