The bottom line here is that $50 (or £40) for 3G won’t get the buyer unlimited global web surfing. It looks too good to be true, and therefore it is. In the words of Admiral Ackbar – ‘it’s a trap!’. That 3G is there so that Amazon can sell you books. Whilst it may be possible to use it (for the time being) to do some surfing too at no extra cost that’s a feature that can’t be (and therefore won’t be) economically sustainable.