Hola While searching the text book stores online I noticed that Academic math books are generally super expensive, ranging price from $150 to $300. Some texts are a few hundreds, 300 pages and they cost up to $200 or more? Come one? Please don't tell me because they have the hardcover or colors and drawings they cost more than average texts. There are many counter examples and they are very excellent books on their subjects, mainly computer science texts. So my conclusion was it has nothing to do with whether the text is really hardcover or colored with nice drawings (even free mags have these features) or the publisher that is expensive...or yet another famous tale that "used book industry" is causing book price to go up. Not to mention that those expensive texts have a news edition very frequent, every year or so and no significant change from previous one except for the exercise numbers? Rip of students' money? Science texts require to be up-to-date with rapidly changing science and this costs money for reviewers? Another unrealistic argument. Changing exercises order and numbers and corrected mistypes is not a consequence of a new scientific discovery :) What about math books? Math is almost the same for many topics since many decades...so what's going on? In my opinion it's the authors' greed.