Someone mentioned Special Topics in Calamity Physics, so I looked it up. MSRP for the paperback is apparently $18 (https://www.penguinrandomhouse.com/books/297621/special-topi... on Amazon the Kindle version is $13.99 while the paperback is $11.39. On the other hand, Barnes and Noble has the NOOK version for $13.99 and the paperback for $16.20, so maybe Amazon is trying to kill e-readers.
