I think that readers outnumber collectors. I want readers to be able to browse book categories that they like, and not miss all my modern 1st eds because they're somewhere else. If you want a first ed, you will find that noted in the description of every one of my books that qualifies. I don't want my listings to suffer because other sellers are less efficient or poor communicators. Why should I be penalised because other people don't do their job properly? Sorry, I know that's selfish, but that's my take on it.