Oblivious to any of these e-books even attempting to have a high sales price on them, but I have to admit that consumer-electronics-companies (who u'd assume do some kind of research) reckon they're something worth investing in.
How much would u spend on something that, afaic, u may well have a device that could do it anyway ?
Then again, I don't personally see the market for netbooks. Those who I know have had them find them fall between their phones and laptops, not really filling the gap. But they must sell.