I find this thread rather intriguing, mostly because it is all over the place.
While I believe I understand the original intent of thread, I always find it interesting to see the input of collectors and resellers, each with their own view of the
RPG world.
There are aspects of "worth" that can be missed if you view this as super-collector or reseller only. Even when people feel an item is "worthless", they are purchased for nostalgia, playability or for parts. Everything has value to the right person. Sure, it may be a waste of time for resellers to list and sell an item which had tens of thousands in a print run, but somebody is probably going to be looking at it at some point.
Hey, I'm not a super collector nor am I reseller (and I really doubt I could make a living selling this stuff) but speaking as a person who enjoys writing, playing, and GMing
RPGs, I buy books because I love the games, art, and recalling those days of old. Often, I could care less if it's worth more or less next year.
I'm sure I'll be smacked for adding my 2 cents but sometimes, members of this group try to make things so very black and white when it's awfully grey. This reminds me of the Reaper Bones derailment thread too.
~throwi