Math textbook author made $26 million

[dfrecore]

And if you thought textbooks were an overpriced scam before......now you have confirmation.

Actually, he has sold many millions of textbooks since the 1970's, so I'm going to guess that he has written a very good textbook (or multiple ones).  If you look at last year alone, he sold 500k books, and made $52 off of each book, giving him $26M.  I don't think that's a ripoff at all.