"One for Monsters vs. Aliens."
"$9.00? The early bird special is $6.00."
"We charge an additional $3.00 for 3D glasses."
"Oh. I brought the pair I received when I saw Bolt. Same glasses, right?"
"Yes, but I still have to assess the surcharge."
"…your ticket aaand your glasses."
"I don't need another pair."
"But you paid for them."
The 3D film conundrum:
Repeatedly forcing glasses on people wastes plastic and inevitably creates waste, because buyers (and cinemas) have no incentive to retain them.
On the other hand, would you trust the staff at a cinema with sanitizing reusable glasses?
The easiest solution is for cinemas to offer tickets and glasses a la carte, but cinemas upsell everything they can.
The other solution is to eliminate 3D cinema, but the film industry convinced itself that 3D is the future. Wikipedia lists 35 upcoming 3D film releases, including seven Pixar films and films by James Cameron, Tim Burton and Zack Snyder not exactly negligible fare.
Final Destination: Death Trip 3D, from the visionary director of Snakes on a Plane!