Do you not think the game (and others on the platform) is worth the cost of a Wii U? In the grand scheme of things, the cost of the console won't hurt your finances and you'll get to play some awesome games.
Don't mind me though. I plan to get the Xbox One so I can play Halo 5 and Rise of the Tomb Raider. I'm trying to justify also getting a PS4 when Uncharted 4 comes out. I think the cost of the two consoles will be worth it to enjoy these 3 games and others in the next few years. I skrimp and save so much but really for what? Might as well enjoy some of it instead of saving it all. You can't take it with you after all.