There is more content there, even if you choose not to play it.I was glad when they announced it would be a flat fee. I paid 10 dollars for, beat it in like an hour and now I feel ripped off. 10 dollars was way to much for the amount of content in the game.
It's what I thought I wanted and I was wrong. If they could have worked a F2P aspect into the game for the toad rally stuff or in game currency maybe it would have been different, can't really say.