Film holders on sale at KEH. Pack of 2 for $6. They're used of course. They also have a limited time offer for shipping - $5 flat anywhere in ConUS. Not sure how long this will last.
Wow. Great price. Thanks for the heads up. I ran the quantity up to the max on the KEH website, and it stopped at 7, so there seems to be 7, 2 packs available at this moment in time.