Although I didn’t find a solid answer as to whether Kurt Vonnegut approved of e-books, it’s worth noting that one of his most popular titles is currently on sale as one. Amazon has Cat’s Cradle available for $1.99 for Kindle. (And you can add Audible narration for an additional $3.95.) I’m not sure whether this is its normal price or a sale price (BoingBoing seems to think it’s a sale price, but doesn’t indicate when it ends), but either way, if it’s still available at that rate when you read this, it’s not a bad price for one of Kurt Vonnegut’s best-known books.