I am curious why Anthony Down’s An Economic Theory of Democracy sells for $45 used, while other famous public choice books sell for much less. For example, The Calculus of Consent sells for $10, and others sell for even less. Perhaps the book has reached some sort of “classic” status in many circles, that allows the publisher to restrict supply extract some monopoly rents.

UPDATE: The Amazon reviews for Down’s book (in the link above) suggest that part of the answer is that the book appears to be regularly assigned to political science majors for class.