I'm not sure why everyone is complaining about the formatting of this bundle -- my copy has a TOC at the front with links to each book and has a separate TOC for the chapters of each book -- so it seems like everyone else's probably has this too. When you open the bundle for the first time on your Kindle, it doesn't take you to the actual beginning of the book (I've found this to be true of basically all Kindle books -- what it considers "the beginning" skips the cover, table of contents, forwards, etc.). If you use "Go to" on the menu and then choose "Cover" (again, something I do at the start of every Kindle book), you will be brought to a picture of the box set. Three page turns brings you to the Contents page, which has links to the cover pages of all 4 books, as well as the bundle cover, title page, and the bonus material at the end (including the excerpt from A Dance with Dragons). If you don't choose a link from this page and instead turn 4 or 5 more pages or so (through the title and copyright pages), you'll come to the TOC for the first book. I would think that it probably doesn't give TOC as a choice on the Go To menu because there is more than one table of contents to choose from!
In addition, as you can see on the bottom progress bar, the start of each book is marked with a dot on the bar. So you can judge your progress through a particular book by seeing how far away you are from the next dot. Also, from the cover pages in the beginning, if you hit the right arrow on the directional pad, you will be taken right to the cover page of the next book. Hitting the left arrow takes you back to the start of the previous book. This will work from any cover page. If you are in the text of the book itself, hitting the left or right arrow takes you to the start of the next or previous chapter. If you have a Kindle 2, you would push the 5-way controller left or right.
I haven't begun reading this bundle yet (though I have read all the books previously -- twice), so I can't comment on the text of the actual bundle -- though of course the books themselves are fantastic! I have browsed through it, though, so I can tell you that the maps are all there as well as picture covers for each book as well as a picture of the box set. The beginning pages of each chapter all have an illustrated border at the top, and the text itself looks great (no problems with text formatting that I can tell).
I also can't complain about the price, since I preordered this for $17.99, which was a great deal for all 4 books. I would agree that the price is kind of high now, but it's really pretty much the same as the 4 books separately in Kindle editions. As it says at the top of the product page, the price was set by the publisher -- not Amazon.
So, in summary, I really don't see the problems that the other reviewers are pointing out. If you are wanting all 4 books for your Kindle, either because you haven't read them before or because you want your next re-read to be in Kindle format, this is a great way to get them!
Amazon has updated this book set, and there is now a link in the Go To menu for table of contents, which brings you to the page at the front with clickable links to each book. This page was already there, but now you can get to it from the Go To menu instead of having to go to Cover and page forward.