There are buyers for everything. This beauty sold in 2003 for $200. What is that, $400 today? It's still crap, like all of the above.
With time and patience, people can get good stuff at the right price. What is the point of buying lesser material that you will need to spend money on to linenback, pushing its price close to $500, when you can get better quality stuff at that same price if you wait.
Example: $580 less than a year ago. That's a good deal. The right poster, no linenbacking necessary, ready to frame. And I'm sure you can get it for even cheaper.
T