I just discovered what Amazon calls a 'Book Upgrade'. When purchasing a book (some selections anyway), Amazon will offer you an 'upgrade' to add an online version for an additional fee. This fee seems to be around $4 - $5, at least for the quick few books I checked. They are marketing this with the following features: 1. Start reading now, no need to wait until the book arrives in the mail. 2. Leave your books at home, and access them from any internet browser.
To be honest I'm not sure how I feel about this. Charging $5 on top of your physical book purchase is sure a way to control their business model. You cannot purchase the online version without buying the book first. Also I'm not a huge fan of online only books. I use ebooks a lot as filler when I'm traveling and don't have internet access. I guess this approach also protects their Kindle ebook model since they currently are not offering any other way to purchase / read those Ebooks. The online books of course are tied to your Amazon account and non-transferable etc.
What do you think about this?