As long as the total cost of Kindle + 'x' number of k-books is less than what it costs for printed ones, it is cheaper for the customer (ok take some points for

As long as the total cost of Kindle + 'x' number of k-books is less than what it costs for printed ones, it is cheaper for the customer (ok take some points for style, ease-of-use etc). The risk with current pricing model is that once somebody buys a Kindle they have to keep buying the k-books at whatever price they come. Otherwise the device becomes useless. One can only hope Amazon keeps a tab on the k-book prices.