>Assume in both cases, the sale is guaranteed... That seems like an invalid assumption. The publisher doesn't choose which book the students buy, the professor

>Assume in both cases, the sale is guaranteed... That seems like an invalid assumption. The publisher doesn't choose which book the students buy, the professor does. And its not like theres a publisher with a pure monopoly on mathematics textbooks, so there is a market and choice avaialble. We can of course question whether the professors are choosing the best textbooks, but in general, unless they're trying to boost sales of their own books, they're not choosing books based on increased cost. >That's the "injustice" I'm trying to fix, but it is a bit of an uphill battle because first-year students assume that the bigger (thicker) books must be better because they have "more stuff" in them. Well, what first-year students think should be irrelevant, shouldn't it, because as you stated, the students have to buy whatever they're told. Its not to say that I think your book is bad or anything (I haven't read it, I can't comment) I just thought that I'd mention this as criticism since at least for me it automatically causes me to think of your book as a gimmick and lower quality than it probably is.