I think you'd find that the market would have a high tolerance for paying more to see big budget films.
I think just the opposite. The audiences for big budget films are mostly teens and younger people. People without a lot of money. I can however see people shelling out more for low-budget films that appeal to a niche audience.
Already, I usually pay about twice as much to see an indie film at a small theatre than I paid to see Into Darkness
at the megaplex.