1) It's not just the iPad2 that's going to hurt KF sales. There are some very decent Android tabs now at the $250 most notably the Tab 7.0 Plus. KF is a very poor quality tablet from a UX pov - I have one so I know.
2) That Federal lawsuit was a terrible judicial decision. Amazon's pricing tactics should have come under equal scrutiny, they are far more opaque than Apple or any other publisher in my view. They're the ones holding a monopoly stranglehold on the publishing industry and this decision allows them to continue doing so for the next five years, while Barnes & Noble et al are unable to compete at their pricing game.
3) It is not correct that Amazon doesn't sell the prices. Where publishers set a given price, it's common for Amazon to undercut it and simply reimburse the publisher - for what reason, I can't imagine. See their listing of the Hunger Games - $4 below the publisher price.
4) There is some evidence that Kindle e-ink readers are hardly selling at all now due to Kindle Fire cannibalisation.