Anything posted on the internet is no longer 'rare'.
These appear to be scans, not searchable text, so their availability is quite limited by that.
While that is true in some sense, in the fact that it can be found and copied an infinite number of times, the physical version of things are still rare. As an example, you might be able to find some super rare comic book online, along with millions of others. In a sense, that comic book is no longer rare and can be enjoyed by anyone at almost any time. But actually owning the physical book itself could be worth a ton of money, due to only a few existing. You still have something which is rare, even if millions own it digitally.
Correct! And pedantic, pointless, condescending comments that add nothing to the discussion other than serving to make OP seem insightful are one of the common things around!