I know it's "in vouge" to bash Amazon whenever there is a chance but put blame where the blame belongs.
The real culprit for the high price is
Penguin Classics, who is known for overpricing their eBooks. They do not give a penny discount to any eBook.
Here is the link to the book (
link).
You'll notice their price is $16 for their eBooks which is also the same price as their paper book. If anything Amazon is not being greedy here but giving you a $6 discount at (38% discount). And if you go check other eBook retailers you notice Amazon is the cheapest.
=X=