Bliss Pro  Suggested by frd 

why is this font so expensive?
please, do you know another one that looks alike and is much cheaper?
Is amazon kindle the only one using it?

Because someone spent a lot of time to design it, and you know what ? He's got to eat too.

sure, but compared to others is much more expensive. I wonder if they want to keep it exclusive instead of making even more money by selling more licenses.