I love my Kindle ... and not just for the e-books, which are very easy to download, but also because I can easily access all the usual search engines, and thus one of my favourite bookmarks is RChat, and so here I am, posting here via my Kindle. I have not ever been asked to provide additional funds by the Kindle people to use the internet. There is no separate dongle thingy, and I the reception is fantastic, often I have five bars showing, whereas on mobile phone 3G the reception can be very iffy. When OH and I go the various locations throughout OZ, including some very sparsely populated districts, Kindle's internet works fine, but even the satellite phone gets iffy, and as to the 3G phone ... errr .... don't ask, but sometimes OH has threatened it "Good and Proper", and it simply won't listen to his instructions.
I have yet to find a location anywhere in OZ where Kindle's internet facility is not satisfactory. I have no knowledge of the Ipad thingy though, perhaps it is as good as Kindle. My Kindle is made in China, but it is not made of China

it has inadvertently fallen hard onto concrete surfaces, it has coped well with that. It has been inadvertently sat on, etc, and the battery needs re-charging perhaps once a day if I use it to post on RChat, otherwise, if I use it for e reading, it lasts around a fortnight.
Cheers, JM