Movies can certainly bring new interest to a character but I don't believe the masses are suddenly compelled to spend 5 figs on a golden age book. There is plenty of source material available online for free, or 2-3 fig more recent books if they want to procure or speculate.
I believe the increase in awareness hits existing collectors that often times have overlooked a particular issue and ignites new demand. As we know it doesn't take much new demand relative to low supply to have a dramatic upward price pressure
I partially agree, and would value your input on this thought - I believe that, yes, GA collectors start to value the book more as it comes into their awareness as an overlooked book - BUT I also believe that when a movie is announced dealers become aware that GA collectors will be more aware of the book, and that puts notable demand on books with very low supply.
That's why I think movies make a big impact on prices.
anything that creates new demand or interest generally translates into higher prices...
that said, when there are only 2 or 3 or 4 copies of a particular "movie" book available in the marketplace, the pricing is more a result of existing collector demand now focusing on what is probably a previously undervalued issue, rather than the actual "movie" driving the price...
perfect example is All Star 8...about 3 years ago (before any movie announcement, but amidst of all the record GA key sales), I starting quietly buying all the AS 8's I could ...and in 2 years , I could only accumulate 9 copies...there just aren't enough to go around...I started getting big premiums to previous prices, again, long before any movie announcement or speculation... maybe the movie interest helped fuel the fire, but it didn't drive it