Curious, have you been looking both online and at your local used book store?
Eh, never been much of a used bookstore guy.
Early on when I was building my library, while I was in Florida as a kid for the summer, I did hit up a used bookstore and got a bunch of Forgotten Realms books, but I honestly never read them. They just sat there, never even cracked them as I realized I wasn’t interested in those particular stories. They eventually ended up lost in FL in another box along with my lost EU books, all my Dragonlance books, part of my Sword of Truth series, and all my Dritzz books and and another dozen. That was the last time I ever went to used bookstores for books. I think that left an imprint on me to not just buy books cuz they were inexpensive, and at the same time, as I got older, I got an idea in my head about being the first to own a copy of a book I was sure I wanted to read.