It still comes down to software and the Kindle Fire UI is a piss poor performer. Funny the did not mention other data plans. You might have to pay $50 once you go over the limits like other prepaid data plans which would be horrible.
Or not. And even if you had to pay regular rack rates for data - the initial "buy in is better than anything else out there.
Amazing that some people can't give Amazon credit where it's due. But I suppose it's one of those damned if they do, damned if they don't type of situations with some posters here.