My annual “cruise the used bookstores right after Hugo finalists are announced” wasn’t particularly successful in turning up this year’s Hugo finalists. However, it did turn up:
Banks, Iain M. The Algebraist. Orbit, 2004. First edition hardcover, with jacket in protective cover. Hugo finalist—perhaps surprisingly, the author’s only. Replaces a U.S. trade paperback. Banks’s third non-Culture science fiction novel.
Bishop, Michael. Blooded on Arachne. Arkham House, 1982. First edition hardcover (with a print run of 4,081), with jacket in protective cover. Bishop’s first short fiction collection, which includes, among others, the title story, “Cathadonian Odyssey”, “On the Street of the Serpents”, and “The White Otters of Childhood”.
Henderson, Zenna. Ingathering: The Complete People Stories. NESFA Press, 2011. Ninth printing of the first edition hardcover, with jacket in protective cover. The definitive edition of the author’s People stories, originally published between 1952 and 1980.