Heard an NPR piece on this film a couple of days ago. My sister was given one of these originals and I'd imagine its worth something. She proudly displays it and tells anyone who asks that Margaret is a wit. Who cares? My personal opinion is that it's art like the 70's fiber optic lamps were "art." Factory line, kitschy and over-hyped are words that come to mind.
The film's getting pretty good reviews though. I'm sure as a personal interest story that it is a tale worth telling. How she let her husband take credit (and money) for her work, to me, is telling about the mind-set of someone who gets involved with a cult that suppresses the value of women.
I'd definitely see it just to watch the performances of Christoph Waltz and Amy Adams.