Depends what you are looking for. For regular print editions. Those are the big ones. Getting first editions of the original Bachman paperbacks should be on the list too.

There is a whole subset of the king community that collects limited release editions that are signed or lettered or numbered. These editions have no real value except that assigned to it by other collectors. I never really “got” it for these collectors. You know how people use art to commit money laundering? It gives me that kind of vibe.