I am curious to see how well the South Park game does, especially with the $60 price tag. The series isn't exactly at the peak of its popularity and given the game's relatively low production values, $60 might seem too steep for most consumers.
The fact you state it as a possibility is mind numbing. Nobody wants to pay $60 to see southpark. Period. Popular game franchises with amazing tech behind them have trouble with sequels (Prototype) and I don't see Simpson games breaking records (well...not since the multiplayer Simpsons Arcade brawler). It's just silly to put a novelty theme game at $60 nowadays unless they release it at a magical point where there's nothing else to choose from. Hell I've never heard of this Southpark one-off and I rather throw my money away on a game I'll probably never play like a HL3 preorder or Mechwarrior online.
The game itself looks pretty good. Definitely seems to live up to the show. However, whether or not its worth $60 is another matter entirely.