I was thinking of getting an e-reader in a few months. I’m deciding between the kindle and the Nook. (I might have to get it in the US.) What matters to me is the price of the products online. So which one has OVERALL cheaper e-books in their online store? Is it Amazon.ca or BN?

P.S. I live in Toronto, Canada. Any Canadian kindle/Nook users here? Please feel free to answer.
Oh, shoot. I didn’t know that the Nook was NOT gonna be available to Canadians. How about the SONY e-readers, everyone? Is the Sony bookstore waaay pricier than Amazon’s?