Here in Iowa we only pay 7% sales tax.
Anyway, I bought this game despite the fact that I own the GCN version. It is definitely the definitive version of the game: the graphics of the GCN version, the extras from the PS2 version, and a perfect new control style.
The controls are wonderful, and perfect for a game where you need to be fast. You've got a mob after you, and you're out of bullets. Instead of repositioning your hand and pressing a button, just quickly flick the remote down. There's a villager right in front of you ready to attack, and you don't have time to ready your gun. Just swing the remote and slash him with the knife. The controls work really well, and make the game a lot better and more intense.