A tub of popcorn costs $6-7.
Richard B. McKenzie, in a book titled Why Popcorn Costs So at the Movies, estimates there's a 1,300% profit margin on movie popcorn in the US.
In Israel, it was recently proposed to outlaw overpriced popcorn (link here). Will the Israeli parliament pass the law and set a precedent? Well, I'm not holding my breath.
For me, it's not how much I pay for the popcorn but the hordes of people at the cinema. I like movies during weekends but I don't like the weekend crowds. Easy solution: DVDs and DIY popcorn.
Weekend + movie + popcorn – crowds = happiness.