Most people know better than to judge a book by its cover, but that hasn’t stopped publishers from plastering shirtless vampires all over underselling copies of the Farmers' Almanac. Stock up on eye-catching titles with today’s Groupon: for $15, you get $30 worth of rare and used books and more at Down in Denver Bookstore in Stephentown. Down in Denver's shop is only open from May to November.

Down in Denver Bookstore specializes in buying and selling used and rare titles within the Old Clark House, a Civil War–era structure nestled in the Berkshire Mountains. Inside the historic shop, originally built in 1840, wooden bookshelves house a plethora of vintage and eclectic literary fiction and nonfiction volumes. Impress literature-loving pals with a signed copy of Jonathan Swift’s Gulliver’s Travels ($28), or dynamize humdrum gatherings by reading electrifying excerpts from Life and Times in Colonial Philadelphia ($5). First editions of William Shakespeare’s The Tempest ($55) and Oscar Wilde’s The Picture of Dorian Gray ($175) bolster even the most esteemed home library or bathroom shelf.