The latest Brad Pitt movie is World War Z. They are offering Mega tickets at 7 theaters nationwide (none is Michigan) that according to UpRoxx gives you:
If this works and they sell a ton of these mega tickets I would expect to see this idea spread. Would you pay $50 to get these extras?
My thought is no, with a IF. If the movie in question is something I can't wait to see, (think new Star Wars movie) and I plan on buying the home video anyway then I might, I and stress might consider it. Any other movie I say no.