I keep thinking there might be ones that are considered somewhat rare, but that is so relative. Its not like the real rare boom market isn't there. I was looking at a couple books to buy that are considered rare, although they are public domain. They aren't cheap maybe 2 to 3 hundred each, but I do have a choice of nearly 5 different printings to choose from, meaning if I buy one they dont go away entirely.

Also, who are the booksellers? Does this mean they can start pushing prices up for these purchases? Surely if AI companies are buying all the rare books they would begin to price them accordingly.

Also, for the rare books, are people trying to buy them to preserve them?