It's worth the money.
This game is hard, and that is exactly what I love about it. The fact that it requires you to become skillful of it's relatively simple combat system that is absolutely something I've missed in gaming. It's great that I don't need to use my brain to memorize button combinations, and instead use it in a different manner; timing. This game wants you to practice your timing; you NEED to in order to survive, and it becomes incredibly satisfying once you learn how to play properly.
I very highly recommend this game. Not just for a quick fun time, but something you WANT to go back to again and again, either to improve your skills or show-off.