And, you can't forget that FUNi has full seasons of DBZ for just $40 a piece, as well as 28 episodes of Yu Yu Hakusho, in 4 season sets, for just $25 a piece, which is easily the best deal that I have ever seen for any anime, on DVD, to date.
As much as I love Death Note (its one of my top 3 favorite anime, and my favorite manga of all time), even I have to say that $70 for 17 episodes is way too much. If you break that down/divide it up, that comes out to roughly $20-$25 for just 5 or 6 episodes, which isn't much better than most DVD single releases that you usually see for anime on DVD.