I get way too excited when someone asks about hardcovers for 'Eragon'—those big, clunky books feel like treasure. If you want brand-new hardcovers, start with the obvious stores: Amazon and Barnes & Noble usually carry recent printings and boxed sets of the 'Inheritance Cycle' (that's the series name that includes 'Eragon', 'Eldest', 'Brisingr', and 'Inheritance'). In the UK, Waterstones and Wordery are my go-tos. Also check Bookshop.org if you want to support indie bookstores; they can often order in boxed sets or special hardcovers for you.
For collectors or out-of-print runs, widen the net to used and specialist sellers: AbeBooks, Alibris, and eBay are goldmines for older hardcover editions, signed copies, or first printings. Pay attention to ISBNs and condition notes (look for phrases like “near fine” or “fine” and ask about dust jackets). If you’re hunting something really rare, collector forums, Reddit communities around book collecting, and Facebook groups often surface private sales. I’ve snagged better-condition hardcovers at library sales and local used bookstores too—sometimes you just get lucky while browsing.
A practical tip: if you care about a specific edition (dust jacket art, first printing, or a signed copy), ask the seller for photos of the title page and dust jacket flap. And don’t forget Christopher Paolini’s official site and the publisher’s pages (Knopf/Random House) for news on reprints or special editions. I love flipping through hardcovers with a cup of tea—there’s something about the weight and the sound of turning pages that makes revisiting 'Eragon' feel like an event, so happy hunting!