Sorry its been a long day...maybe it can be attributed to a decline in all thing above $100 generally?
My collection is probably worth 10K (retail, I like to think so) but the prospects of buying 2 five thousand dollar posters to me is insane. I wonder if, growing hobby, more people and more posters, but less big guns out there willing to do such crazy puchases.
the hobby is not growing. it is at best, stagnant and there are plenty of big guns, but it would be obvious that they have fled from things like Unihorror and 1950s horror/sci-fi
look at this card that sold on ebay this week
http://www.ebay.com/itm/291280178666?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AITyes it was incorrectly described as 9x11, but the size was easily answered in an email.
$800 is unconscionably low, but the problem is that the market in this area is to some degree collapsing.
a realart pressbook for Mummy's Tomb sold for $15 and a Son of Dracula for $15 also
it's not currently an investable area