I (for one) really enjoyed this game, and think anyone that got it for $9.89 really lucked out.
Then again, I'm generally a fan of the "Warriors" games, and a big fan of "Fist of the North Star", so it was almost tailor made for me.
If anyone is on the fence about this, but a big FOTNS fan, I'd definitely recommend it, as Koei paid a lot of attention to details about the anime/manga.
However, if you do pick it up and enjoy it, by the time you buy all the DLC, you'll probably be paying about the same price as a full game (which, I suppose, is still better than paying 2X the price for the game).