The publishers' demand that a book is sold only in certain countries, while naive, is one thing.
The implementation of allowing purchase and download only to users that have a credit card issued by a US bank is pure nonsense, it has nothing to do with the publishers' rights.
I wonder, though, could they provide a service by which they send you a memory card with books inside by conventional mail? If you can buy paper books from outside the US, you surely can buy a card with ebooks inside.
|