I am still happy with my Nook, but I do like the keyboard on this thing, and the size. They have good viewing angles, light weight, and the buttons are all on the side that I use (right handed). All in all, expensive but might be worth it if you are after a dedicated ereader.
The only reason I can see of them not going down in price is the free 3G.
For the ones comparing it to the fire: as it said the last time they posted this, we can't compare the Fire to normal Kindle. This is an e-reader, and a dedicated device. You can't compare this to an tablet, it isn't even close to designed to do the same thing. Also, unless the Fire comes with free worldwide 3G, then for what this is, I would prefer it.
These things are, as others said, easier on the eyes, the same viewing angles as paper, allowed in schools vs tablets as they are ONLY readers, good at what they do. The same way you can't dismiss GPS devices because some phones have a GPS, you can't dismiss a dedicated ereader because you like tablets. They aren't the same thing, and never will be.