> Even an unusual edition of an well known book can be unique in various valuable ways.
Absolutely! I had a paperback copy of Dune when I was younger, that disappeared after being loaned to someone. It was printed on very fine grained paper (think bible paper), maybe ~2cm thick, despite being 700+ pages long, and the fine grain of the paper made the text very crisp. Modern paperback copies are 4.9cm thick, and the text isn't as crisp. The only way I'll ever find a replacement for the higher quality paperback copy is to find an old one at a used bookstore sometime. This doesn't make it valuable in a monetary sense, but it still matters to me.
Absolutely! I had a paperback copy of Dune when I was younger, that disappeared after being loaned to someone. It was printed on very fine grained paper (think bible paper), maybe ~2cm thick, despite being 700+ pages long, and the fine grain of the paper made the text very crisp. Modern paperback copies are 4.9cm thick, and the text isn't as crisp. The only way I'll ever find a replacement for the higher quality paperback copy is to find an old one at a used bookstore sometime. This doesn't make it valuable in a monetary sense, but it still matters to me.