Both Hachette Book Group and Penguin have released free holiday sampler ebooks. (The metadata for each is a little strange depending upon which ebookstore you check. At Amazon, HBG‘s is sub-tagged as “Fiction > Action & Adventure.” At Barnes & Noble, Penguin‘s is listed as “age range: 12 years.”) For a mighty digital list price of 99 cents, Houghton has a Best American Sampler from across their annual series of Best American writing. And, to file under TMI from searching, apparently there is also a robust line of “samplers” of dirty pictures available via ebooks as well.